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  • 标题:A welfare trap? The duration and dynamics of social assistance use among lone mothers in Canada.
  • 作者:Cooke, Martin
  • 期刊名称:Canadian Review of Sociology
  • 印刷版ISSN:1755-6171
  • 出版年度:2009
  • 期号:August
  • 语种:English
  • 出版社:Canadian Sociological Association
  • 摘要:In Canada and the United States, the changes from the late 1980s to the early 2000s have generally included reduced eligibility for welfare or social assistance, the lowest tier of state income security, combined with increasing requirements for work-related activities as conditions of assistance, in order to move welfare recipients into the labor market (Bashevkin 2002). These changes were facilitated in Canada by the 1996 shift in federal-provincial funding arrangements from the shared-cost Canada Assistance Plan (CAP) to the fixed-amount Canada Health and Social Transfer (CHST). This change significantly reduced the funding available for provincial welfare programs, while also removing the CAP's requirements that social assistance be provided on the basis of need alone. At roughly the same time, the Canadian government made important changes to federal Employment Insurance (EI), including reducing eligibility and the length of benefits, forcing some unemployed workers to turn to provincial social assistance.
  • 关键词:Mathematical models;Personal income;Single mothers;Social policy;Social service;Social welfare;Unemployment insurance

A welfare trap? The duration and dynamics of social assistance use among lone mothers in Canada.


Cooke, Martin


BETWEEN THE LATE 1980S AND THE early 2000s, Canada and other western welfare states engaged in important and contentious debates surrounding the restructuring of welfare state programs. These occurred partly as a response to relatively high rates of benefit use and rising government debts resulting from recessions and economic restructuring over the period. The policy responses have involved the redesign of programs to further encourage work and to reduce "dependency" on benefits and to increase labor force participation, and have occurred in continental European and Scandinavian welfare states, as well as in "residual" or "liberal" welfare states, such as Canada and the United States (Esping-Andersen 1999). The thesis of the "path dependency" of welfare state restructuring (Pierson 1994) suggests that changes in these countries have generally been in keeping with the core characteristics of their regime types. Whereas the European Commission's Flexicurity project represents current efforts to balance traditional social protection with labor market flexibility (Wilthagen 2007), changes in the Anglo-American countries have followed the principle of providing low levels of support so as not to create disincentives for labor market participation (Myles and Pierson 1997; Pierson 1994).

In Canada and the United States, the changes from the late 1980s to the early 2000s have generally included reduced eligibility for welfare or social assistance, the lowest tier of state income security, combined with increasing requirements for work-related activities as conditions of assistance, in order to move welfare recipients into the labor market (Bashevkin 2002). These changes were facilitated in Canada by the 1996 shift in federal-provincial funding arrangements from the shared-cost Canada Assistance Plan (CAP) to the fixed-amount Canada Health and Social Transfer (CHST). This change significantly reduced the funding available for provincial welfare programs, while also removing the CAP's requirements that social assistance be provided on the basis of need alone. At roughly the same time, the Canadian government made important changes to federal Employment Insurance (EI), including reducing eligibility and the length of benefits, forcing some unemployed workers to turn to provincial social assistance.

The CHST and the changes to EI, it is argued, encouraged the provinces to focus on reducing welfare expenditures by changing benefits and eligibility requirements (Bashevkin 2002; Boychuk 2006; Campeau 2005). The most dramatic of the Canadian changes occurred in Ontario, where benefit levels were reduced by 21.6 percent in 1996 and where a new requirement of mandatory work-for-welfare, or "workfare" was imposed. Other provinces also made social assistance benefits conditional on participation in job searches or training, or taking the first available job (Gorlick and Brethour 1998).

The impacts of these changes on the Canadian social assistance caseload are somewhat difficult to identify because they coincided with a period of economic and employment growth. The changes do seem to have corresponded with a reduction in the rates of social assistance use, but may also have contributed to a rising intensity or "depth" of poverty in Canada over the 1990s (Picot et al. 2003). Although a majority of those who left social assistance over the 1990s saw their economic conditions improve, it appears that for a sizeable minority, perhaps as large as 30 percent, economic well-being was lower after leaving welfare (Frenette and Picot 2003).

The changes to provincial welfare systems highlight a number of assumptions about the dynamics of social assistance use in Canada, and which are common to other liberal-democratic welfare states. For one, the policy focus on reducing "dependency" and on encouraging work effort would seem to indicate that welfare is generally a long-term phenomenon and that recipients have a tendency to remain on benefits unless required or forced to leave, or until they have acquired enough "human capital" or saleable skills that allow them to find well-paid work (Bane and Ellwood 1994). This is certainly the assumption of econometric models of the "work or welfare decision"; people rationally weigh welfare benefits against the expected utility of wage work (e.g., Charette and Meng 1994). It also highlights the assumption that paid work is the major route off of welfare. This is particularly important considering that, as in the United States, a large proportion of Canadian social assistance recipients are lone mothers with young children. An examination of U.S. Aid to Families with Dependent Children (AFDC) receipt in the 1980s found that nearly 30 percent of women left welfare through marriage, rather than by finding work (Bane and Ellwood 1994). Some have suggested that the changes made under the U.S. Personal Responsibility and Work Reconciliation Act (1996) were intended to promote exits through marriage, or "wedfare" as much as to promote work (Mink 2001).

In the Canadian context, there has not been the same concern that welfare policies might promote marriage as an exit from assistance receipt, but it has been pointed out how the changes in welfare have disproportionately affected women. Provinces had generally excluded women living alone with children from having to participate in paid work-related activities. Indeed, as social assistance had developed from mothers' allowances programs after the First World War, the expectation remained that women's main duty was to raise children, and that the state would take the role of the absent or deceased husband (Little 1998). But whereas paid work by lone mothers had previously been discouraged, provinces increasingly made women, including those with young children, subject to the same work-related requirements as men over the 1980s and 1990s. In the absence of flexible employment arrangements and available and affordable child care, and given the large proportion of social assistance recipients in Canada who are lone mothers, changes to social assistance programs are therefore gendered in their effects, even though the programs are formally universal (McMullin et al. 2002).

These concerns led us to ask several questions about the use of social assistance and particularly by lone mothers in Canada. These include questions about the duration of assistance and the factors that affect it and the types of events that precipitate social assistance beginnings and hasten endings. We are particularly interested in the question of "dependency," and whether social assistance is generally a long-term phenomenon. As well, we investigate how time on social assistance may itself affect the chances of leaving it, and whether there is evidence for the "welfare trap." We frame these questions in terms of the life course, which helps to think of social assistance as a temporally limited state that is affected by previous events and that also forms the context for later events and decisions.

A LIFE COURSE PERSPECTIVE ON SOCIAL ASSISTANCE AND LONE MOTHERHOOD

The life course, currently popular in a number of disciplines, does not constitute a theory itself, but rather a framework into which a number of theoretical perspectives can be incorporated. Typically, the life course is seen as the pattern of age-graded transitions through experiences and states in various domains, including the family, work and education, and health (Settersten 2003). These patterns exist at the aggregate level, as institutionalized sets of patterns and expectations, as well as at the level of the trajectories and careers of individuals. At the institutional level, this is seen in the classic "tripartite" life course of men, progressing through education, work, and retirement, and which is largely due to the institutionalization of public education and retirement systems (Kohli 1986). At the level of the individual, the life course exists as a distinctive sequence and timing of transitions through states, such as singlehood, childbearing and marriage, employment, unemployment, and retirement; and wellness and ill-health.

The theoretical utility of the life course for studying social assistance lies in its ability to incorporate both economic and sociological views on the use of these programs. As described by one of its foremost American proponents, the course of our lives is shaped by social structures, including gender, race, and social class; by institutions, and by events in the lives of others to whom ours are linked (Elder 1994). It is also shaped critically by historical time and place and by cohort patterns, as well as by developmental processes of biological and psychological aging. However, as much as the life course is the product of external influences, this is true in part because those influences form the context of individual decisions. People make choices and act, or fail to do so, in the service of a wide variety of motivations. Decisions and actions taken previously are also part of the context for subsequent decisions and actions, and affect the various types of social, material, and physical resources available to address crises or opportunities (Elder 1994). This is partly captured by the life-course concept of "cumulative advantage or disadvantage" (O'Rand 1996). Through such mechanisms as the accumulation or depletion of human, financial, or social capitals, as well as the cumulative aspect of physical health, the experience and timing of previous events can lead to increasingly "positive" or "negative" trajectories.

Of course, many of these insights are not new, and they can be related to large bodies of work in developmental psychology, branches of sociology, economics, social history, gerontology, and health sciences (Marshall and Mueller 2003). They do, however, provide a useful and somewhat refreshed perspective on state programs and policies, and a way of framing important empirical questions related to the effects of previous life-course trajectories on program use, as well as the importance of programs for subsequent life events. Welfare programs can be thought of as targeted to those whose life courses have in some way deviated from the currently institutionalized pattern. This includes people out of work for a prolonged period as well as women raising children alone, and who have either experienced life course events" out of sequence" by having children before being married, or whose partnerships have ended (Daly and Rake 2003). The strength of the incentives to work or marry in these programs reflect the degree to which they aim to influence the life course by encouraging people to return to the normative institutionalized pattern. Feminist critics of welfare state programs have pointed out the significant gender content in the expected patterns, as well as how that content has recently changed with the treatment of women primarily as workers or potential workers, rather than mothers (Little 1998; Mink 2001). From these perspectives, welfare state programs are part of the reproduction of gender inequality, reinforcing a male life course that is structured mainly by labor market transitions and a female life course that is mainly given its shape by family transitions. Similarly, critiques that point out the role of welfare programs in maintaining class inequality, and particularly the way that the highly stigmatized programs discipline the low-wage labor force (Piven and Cloward 1993), can also be incorporated into a life-course framework.

As much as this framework can incorporate institutional and structural influences on the life course, it is also able to consider individuals' decisions to receive social assistance, or not to, as part of a strategy by which they try to meet certain goals. This emphasis on agency and the active construction of one's life allows it to incorporate economic theories and econometric models that predict welfare use as a function of individual human capital and expected wages, the various constraints on working, such as the presence of children, and the benefits available from welfare. For some sociologists, these models may not adequately consider the content of these goals, such as "independence," the importance of paid work for self-esteem, and how these are socially produced and defined. However, econometric approaches are useful insofar as they acknowledge that benefit use is a decision, albeit one made in a highly constrained context. Similarly, some qualitative sociological research has found it is useful to consider welfare as one part of a complex strategy by which lone mothers attempt to provide for their families, both economically and emotionally (Edin and Lein 1996).

Last, a life-course framework can be used to incorporate macro-theoretical views on contemporary social change. For example, theorists, such as Ulrich Beck and his colleagues (1994) have argued that a characteristic of late modernity is the heightened importance of reflexive construction of individual lives, resulting in a tendency toward increasing heterogeneity in life trajectories. Beck has also argued that the risks of poverty have become more "democratized," increasingly reaching into the middle classes, as well as "temporalized," and more likely to be short-term (Beck 1992, 1999). These concerns are reflected in the life-course literature as debates over whether life courses have indeed become more individualized and heterogeneous, and whether temporal patterning has become more or less strong (Henretta 2003).

Viewing welfare use from the perspective of the life course focuses our interest on the various aspects of biography that affect benefit take-up, the duration of welfare, and whether it is generally a short- or long-term phenomenon, and the implications of welfare experiences for later life events. Leisering and Leibfried's (1999) study of welfare use in Germany is an excellent example of a life course approach to state programs, investigating the reasons for welfare use, its duration, and factors affecting exit from welfare. Thus far, there has been little research on North American welfare systems that explicitly uses this lens, with much of the existing research coming from economics. However, that research can provide some important evidence regarding the duration and dynamics of social assistance, and the conditions that affect the timing of exit, and which can be interpreted from a life course perspective.

PREVIOUS EVIDENCE ON SOCIAL ASSISTANCE DURATION AND THE "WELFARE TRAP"

There has been some research on social assistance duration in individual Canadian provinces and in the United States. Most previous studies have incorporated various characteristics of individual recipients, some measures of the local labor market, and some indicators of the benefits available through welfare. Individual characteristics are taken to affect one's ability to exit social assistance through labor or marriage markets (Harris 1993; O'Neill et al. 1987). Characteristics, such as education and previous work experience, as well as marital status and the number and ages of children can be thought of as reflecting human capital, but of course they are also reflections of previously experienced transitions and trajectories in the domains of work and education and family life (Cooke and Gazso 2009). As one would expect, higher education and more work experience are consistently found to increase the rate at which women leave social assistance, while the presence of children, particularly young ones, make exit more difficult. Whether a lone mother has been previously married is sometimes included, and is generally found to increase the rate of exit from social assistance, possibly through the availability of spousal benefits (Harris 1993; O'Neill et al. 1987; Stewart and Dooley 1999). O'Neill et al. (1987) also include an indicator of whether a woman became a mother as a teen, but find no significant effect.

Aspects of the local labor market that are generally included in these models are the expected wage rate or minimum wage, local unemployment rates, and expected welfare benefits. Results have confirmed that higher expected wages and lower unemployment increase the pace of welfare exit (Harris 1993; O'Neill et al. 1987; Stewart and Dooley 1999). One Quebec study found no clear effect of minimum wage rates on exit times, however (Duclos et al. 1999).

In general, research has found that social assistance use is characterized more by short-term than by long-term use. Using 1980s administrative data from British Columbia and nonparametric models, Barrett and Cragg (1998) find that most welfare spells were short, with 75 percent ending in six months, but that there was a high incidence of return to welfare, with 50 percent of welfare leavers returning within a year. They find that a quarter of all of these cases were single mothers with children, and that lone mothers tended to leave welfare somewhat more slowly. Importantly, the hazard function, representing the changing "risk" of leaving social assistance, indicated that these BC recipients were most likely to exit within six months of the beginning of receipt, with the likelihood of exit declining thereafter. Duclos et al. (1999) found that in Quebec 34 percent of new entrants to social assistance between 1979 and 1993 left within six months, and estimated the median duration in that province at about 22 months, suggesting that the exit rate is initially high but drops off rather sharply. Their estimate is similar to findings in the United States by Bane and Ellwood, that half of AFDC spells in the 1980s were less than two years (Bane and Ellwood 1994). Other evidence from the United States has also found that a majority of lone mothers' spells are short, but that there is an important number of long-duration recipients, and confirmed that the probability of leaving decreases with time (O'Neill et al. 1987).

This question of "duration dependence," or how the risk of leaving social assistance varies with rime, is an important one, as it may provide evidence about one possible effect of social assistance on people's subsequent life courses, and how a previous decision affects the context of later ones. In particular, difficulty leaving social assistance may be an "unintended consequence" of receipt that is taken up to realize particular short-term goals (Leisering and Leibfried 1999). This is sometimes referred to as the question of the "welfare trap"--a decreasing ability to leave social assistance. This effect may have several sources, including the stigmatizing effects of long-term welfare receipt and inability to find work, the degradation of human capital over time, psychological effects, or some combination of these, although the exact cause is unclear (Sandefur and Cook 1998).

This research was supported by a Social Sciences and Humanities Research Council of Canada (SSHRCC) Doctoral Fellowship.

MARTIN COOKE University of Waterloo

Martin Cooke, Assistant Professor, Department of Sociology and Department of Health Studies and Gerontology, University of Waterloo, 200 University Drive W, Waterloo, ON N2L 3G1. E-mail: cooke@uwa terloo.ca.

Negative duration dependence is rather difficult to conclusively identify and to sort out from spurious effects. Long-term cases can be expected to accumulate over time, as those who are more able or willing to leave social assistance do so. Some of this will be due to measurable covariates, and can therefore be controlled in multivariate models with appropriate data. However, as in demographic studies on migration and of mortality, some of this effect may be due to unmeasured characteristics, such as psychological states or preferences. In migration studies, it is common to observe that some people are "movers" while others are "stayers," and studies of mortality are often concerned with controlling for the effects of unmeasured "frailty" (Trussell and Richards 1985). As a result, the predicted probability of an individual experiencing the event (migration, death, or exit from social assistance) may spuriously appear to decrease with time because the remaining sample becomes increasingly composed of those with an unmeasured tendency to remain (Heckman and Singer 1984). In their study of Canadian workers' compensation claims, Butler et al. (2001) find that controlling for this "unobserved heterogeneity" has an effect on parameter estimates, as well as on the observed duration dependence. However, although most of the existing research on the length of social assistance use acknowledges this problem, only one Canadian study has attempted to control for it. Using 1990 to 1994 administrative Ontario data, this study confirmed the presence of unobserved heterogeneity, but found that there remained a small negative duration dependence effect (Stewart and Dooley 1999).

It should be noted that a declining hazard rate, even with unobserved heterogeneity controlled, does not conclusively prove the existence of a welfare trap. Using simulation models, Contini and Negri (2007) have shown that a declining hazard rate can exist even in the absence of welfare duration dependence, because it may be that time in poverty or unemployment, rather than time on welfare, that leads to declining exit rates. Because these trajectories are interrelated, and data on the onset of poverty are generally limited, it is difficult to isolate their independent effects. However, a declining exit rate is certainly necessary for there to be a welfare trap. We discuss the importance of this evidence further in our conclusions.

In this study, we use nationally representative survey data to explicitly address questions related to the way the likelihood of leaving social assistance depends on time. Using 1996 to 2001 data from the Survey of Labour and Income Dynamics (SLID) and semiparametric and parametric event history models, we investigate the duration of social assistance receipt of lone mothers, the life course correlates of longer receipt, and whether the risk of leaving social assistance does indeed decline with time. Whereas previous Canadian studies have used provincial data, these national SLID data widen our scope for inference, while allowing us to include the effects of characteristics of the previous life course and local labor market conditions.

DATA AND METHODS

The data used for this investigation are from Panel 2 (1996-2001) of the SLID, a national prospective longitudinal survey of the finances and incomes of Canadians (Statistics Canada 1994). (1) The SLID samples include roughly 30,000 people from 16,000 households, who are selected for inclusion in six-year overlapping panels. The survey includes retrospective questions about marital and employment histories, and collects prospective data on income, education and employment, benefit use, and family and household changes. The SLID data also allow us to identify lone mothers, defined for out purposes as the female heads of lone parent census families aged 16 to 59, with at least one child at home (Statistics Canada 2004). The SLID also collect data specifically on monthly receipt of social assistance, providing up to 72 months of observed social assistance receipt.

Independent variables include characteristics of the individual's previous life course, including marital and household status, age and number of children, education, and previous work experience. Father's education is included as a rough proxy for the social class of the respondent's birth family. As well, models include provincial indicator variables as proxies for the different rules and relative benefit levels associated with provincial systems. An indicator variable controls for the presence of a work-limiting disability. Last, the provincial minimum wage and regional benefit levels are included as characteristics of local labor markets. Provincial annual hourly minimum wage levels from 1995 to 2001 came from Human Resources Development Canada (Human Resources Development Canada 2004), and were converted to constant 2001 dollars using the Consumer Price Index provincial annual averages (Statistics Canada 2001, 2002a, 2002b). The average annual unemployment rates for Economic Regions (Statistics Canada 1992) were taken from the Labour Force Survey data, from the 2002 Labour Force Historical Review (Statistics Canada 2002a, 2002b). These variables are included in the multivariate models as time-varying covariates, allowed to vary monthly.

We begin with nonparametric lifetable measures to describe the differences in average social assistance duration for lone mothers and other family types. Continuous-time event history models are used to address the effects of the covariates on the length of time that an individual spends receiving social assistance, and to investigate how the likelihood of leaving depends on time previously spent on social assistance. Semi-parametric models (Cox 1972) are used to estimate the effects of the covariates on the hazards of leaving social assistance for each of the 72 months of potential receipt. The Cox regression model of the hazard rate for individual i can be expressed as

[h.sub.i](t) = [[lambda].sub.0](t)exp{[[beta].sub.1][x.sub.i1] + ... + [[beta].sub.k][x.sub.ik]} (1)

or the product of an unspecified baseline hazard function [[lambda].sub.0](t) and an exponentiated set of k covariates (Allison 1995). Cox models are often favored because they do not assume a specific distribution for the hazard function, and are subject only to the major assumption that the shape of the function is the same for all levels of the covariates. Violations of this assumption are generally assessed and corrected by the inclusion of interactions of the covariates with time (t).

Although the Cox models are flexible, and we can examine the shape of the estimated baseline hazard function, they do not allow us to test hypotheses about that shape. As well, the flexibility costs something in efficiency of parameter estimation. In order to test specific hypotheses about the shape of the hasard function, we estimate similar models in parametric form using accelerated failure time (AFT) models. The general form of the AFT model is

ln([t.sub.i]) = [[beta].sub.1][x.sub.i1] + ... + [[beta].sub.k][x.sub.ik] + ln([[pi].sub.i]) (2)

where the distribution of ([[pi].sub.i]) takes a particular distribution. These models are parametric models in the sense that both covariates and the functional form of the dependence on time are specified. The AFT metric more specifically addresses the issue of the effects of time, and more easily allows predictions of failure times.

There may or may not be a firm theoretical reason to choose or discount any particular functional form for the hazard. For our purposes, we will fit models where the underlying process is assumed to have an exponential distribution, a Weibull distribution, a log-normal distribution, and a gamma distribution. These are important for our tests of hypotheses about the effects of time. The exponential distribution assumes a constant hazard rate, or that people experience the event at the same rate over time. This is a special case of the Weibull model, in which the hazard rate may change over time, monotonically increasing or decreasing. The log-normal distribution is nonmonotonic, allowing the hazard to increase and then decrease, as would be the case if people were more likely to leave social assistance in the first few months of receipt, followed by a decline. The log-normal and the Weibull distribution are special cases of the gamma distribution, and they can be compared using a likelihood ratio chi-square test (Heckman and Walker 1987). Last, in order to test for spurious duration dependence, or "unobserved heterogeneity," the AFT models were re-estimated with gamma-distributed, individual-specific random terms, using the facility provided in Stata v.8. This procedure attempts to model the heterogeneity in the sample by creating a mixture model in which the heterogeneity is assumed to takes some flexible distribution. By testing the significance of the heterogeneity term's parameters, we can judge whether duration dependence is likely to be spuriously produced by the accumulation of long-duration cases in the sample, or whether it represents the real risk of social assistance exit over time (Cleves et al. 2004)

There are some problems with the SLID data. For one thing, the short duration of the panel means that censoring, the nonobservation of the beginning or the end of a social assistance spell, may be heavy. To the extent possible, we have addressed this through our choice of methods, particularly the use of proportional hazards models and partial likelihood estimation. The monthly social assistance data also forces form choices about what constitutes an "end" to social assistance. Ideally, the observation period would be long enough and the sample large enough to observe all social assistance spells, and to model the duration of first, second, and subsequent spells separately, as well as the probability of subsequent spells and the final exit from welfare. Instead, we model the duration of the first observed spell, defined to have ended after two months of nonreceipt, in order to disregard "administrative" endings (Stewart and Dooley 1999). Also, we model the total number of observed months on social assistance in order to observe whether there are different effects due to the way in which social assistance receipt is defined (Dahl and Lorentzen 2003). The time variable in the total duration models is the total number of months of observed receipt, and these models therefore do not include the monthly measures of the local labor market conditions.

There have been problems with the reporting of months of social assistance usage in the SLID, compared with administrative data, and the "heaping" beginnings and exits from social assistance at the beginning and end of the calendar year. Kapsalis (2001) finds that the underreporting of approximately 15 percent might be ignorable, and also that those terminating in December and beginning in January were not significantly different than other recipients, on a number of characteristics.

The final samples for the event history analyses are presented in Table 1 for all family major income earners in census families, including lone mothers. After deleting cases who reported receiving social assistance, but not the months of receipt, there were 1,940 major income earners who received social assistance at least one month during the 1996 to 2001 period, 635 of whom were lone mothers at the time of receipt. Of those, 577 had complete records and are included in Table 2.

RESULTS

Following our general analytic strategy, we first present nonparametric estimates of the length of social assistance, comparing lone mothers with the heads of other household types. We then present semiparametric multivariate models for all household types, and for lone mothers separately. Last, we present the results of the best-fitting AFT models and interpret the results in terms of the predicted length of social assistance receipt.

Length of Social Assistance

Long-term social assistance receipt was hot common in the SLID data. Without adjusting for censoring, 10 percent of the women in the sample who experienced lone motherhood and social assistance between 1996 and 2001 received benefits for six months or less and 20 percent experienced a total observed duration that was between six months and one year. Fifty-seven percent were observed to spend two years or less on social assistance, and 15 percent received benefits for two to three years. Eighteen percent received benefits for four years or more, 8 percent for five years or longer, and 5 percent of lone mothers who received social assistance did so continuously for the entire six years of the panel.

Table 3 presents the nonparametric median time to exit, for the first, second, and third observed spells, and for the total observed duration. The duration of the first observed spells and the total observed duration were significantly longer for lone mothers than for other family types, 27 months, compared with 23.4 months. Second and third spells were also more likely to be observed for lone mothers, despite the fact that the longer first spells left somewhat less time in which to observe subsequent spells.

Predictors of the Duration of Social Assistance Receipt

Lone mothers also exited social assistance more slowly than major income earners in other families, once we controlled for education, age, work experience, fathers' education, disability, province, and local labor market conditions. Table 4 presents the semiparametric models of the total observed social assistance duration and the first observed spell for al family types. Interactions with functions of time were included to correct for violations of the proportionality assumption. Lone mothers had significantly longer first observed spells and total observed social assistance duration than couples with children, and in both models exited about 33 percent more slowly (Table 4).

These models also tell us something about the aspects of the life course, besides being a lone mother, that influence the duration of social assistance. As shown in Table 4, controlling for the other variables, age significantly decreased the rate of exit from social assistance, although the effect of each additional year was only slight (HR = .99). Surprisingly, there were few significant independent effects of education. Having less than high school decreased the rate of exit from the first observed spell by about 15 percent. Previous work experience had a greater effect, with those with more years exiting earlier. Fathers' education had no significant independent effect on the rate of exit of the first spell, or on the total observed duration. As expected, a higher regional unemployment rate significantly reduced the pace of exit, while higher minimum wages significantly increased exit rates.

Table 5 presents the results of models of the total observed duration and the first observed spell of social assistance for women who were lone mothers when they began that spell. These models include some aspects of the life course specific to lone mothers, such as the age at which a woman had her first child and the number of preschool children living with her. Among women who had been married, the age of first marriage was included in some models, but was collinear with age at first birth. Included separately, it did not improve the model fit more than the marital status variable, and was thus excluded. These models did not seriously violate the proportionality assumption, so no interactions with time were included.

Lone mothers who had never been married received social assistance significantly longer than those who were divorced, separated, or widowed. Never-married lone mothers exited at a rate that was 30 percent slower than those who had been married and were divorced or widowed at the beginning of their first observed spell. Older women tended to leave social assistance more slowly than younger women, but age had no significant effect on the duration of the first observed spell alone. Models with age as a set of dummy variables offered no significant improvement in model fit judging by a likelihood ratio chi-square test, and showed no evidence of a nonlinear age relationship (not shown). Although lone mothers who were older when they had their first children were more likely than their younger counterparts to receive social assistance in 2001, the age at first birth had no significant effect on the length of time spent on social assistance. Furthermore, age at first marriage did not significantly affect the length of time respondents spent receiving social assistance (models not shown).

Similar to the models for all family types, education had no significant effect on the length of time a lone mother received social assistance. This may be because of the coarse categorization of education due to small numbers of lone mothers with university degrees who experienced social assistance, or to lower statistical power because of smaller sample size. However, it also may be that lone mothers with higher education were less likely to experience social assistance, as Charette and Meng (1994) found, but that once on social assistance, those with higher education did not leave social assistance significantly faster. As with earlier models, the level of education of a woman's father, a proxy for resources available from family, also had no significant independent effect on the rate at which she left social assistance.

Lone mothers who had more years of work experience may leave social assistance more quickly, controlling for chronological age as well as the other variables, but the evidence from the models is not clear. Those with 10 to 19 years of experience had a predicted hazard of leaving social assistance that was 37 percent higher than those with no work experience, but this effect was significant only for total duration, and not for the first observed spell. This could indicate that those with more work experience were less likely to experience more than one spell. None of the other work experience indicators were significant at the .05 level, however (Table 5).

Women with preschool children at home did not experience significantly longer periods of social assistance receipt, controlling for the other variables. Recall that the number of preschool children living with a lone mother also did not significantly affect the probability that she received social assistance. Again, alternative models that instead included the total number of children of all ages also found that variable to be insignificant, controlling for other variables in the model.

[FIGURE 1 OMITTED]

[FIGURE 2 OMITTED]

Provincial effects were somewhat different for lone mothers than for major income earners of all family types combined. As with the model including all census family major income earners, higher unemployment was associated with longer durations on social assistance, while a higher minimum wage tended to reduce the length of the first observed spell.

The Shape of the Hazard Function: Changing Exit Risks Over Time

To address our major interest of the way that social assistance exits depend on time, we first examine the smoothed estimated baseline hazard from the Cox regression models. Figure 1 presents a plot of that function for the model presented in Table 5, roughly interpreted as the changing instantaneous probability of leaving the first spell of social assistance. The general shape of the hazard indicates a rising risk of exit, peaking just before the 18th month of receipt, and declining rather sharply afterward. Separate curves are presented for lone mothers who were separated, divorced or widowed, or single and never married, at the beginning of the first observed spell. The significantly lower risk of exit, and therefore the higher duration of social assistance, is visible for women who had never been married.

[FIGURE 3 OMITTED]

As described above, the proportional hazards model does not let us test specific hypotheses about the shape of the hazard function. By estimating exponential, Weibull, log-normal, and gamma AFT models, we were able to determine which best fit the data. Likelihood ratio tests show that the gamma is not an improvement over either the Weibull or the log-normal models, leading to the conclusion that if the hazard does increase and then decrease, there is only a single peak. The parameter estimates and standard errors of the models changed only very slightly after inclusion of the frailty term, and so we conclude that the duration dependence does not appear to unobserved heterogeneity and the accumulation of long-term recipients in the sample. In other words, we find that leaving social assistance becomes less likely with additional time in receipt, both for lone mothers and for the heads of other family types (models not shown).

Model Results

The results of the log-normal model are not presented, as the direction and significance of the covariates in the log-normal AFT model were similar to those in the earlier Cox models. Lone mothers who had never been married tended to exit the first observed spell of social assistance more slowly than those who had been married and were lone mothers after divorce or the death of a spouse. Figure 2 shows the estimated hazard of leaving the first spell for lone mothers who were divorced or widowed and those who were never married. The risk of leaving social assistance rises during the first few months and then declines, but more steeply for those who had been married.

This is also shown in the survival curve for the same model, which indicates the proportion of lone mothers who can be expected to remain on social assistance, by months already spent in receipt. This shows that more lone mothers who were never married can be expected to stay on social assistance for the entire 72-month period (Fig. 3). The predicted median length of the first observed spell for a lone mother who was never married, who was 33 years old at the start of the spell, and who had average or reference values on the other covariates was 28 months. This is compared with a predicted median duration of 20 months for a divorced or widowed lone mother.

CONCLUSIONS

We have proposed a life course framework for the interpretation of these results, for several reasons. It helps us to incorporate scholarship that focuses on the role of the welfare state in reproducing class and gender relations and in creating expectations about the timing of education, work, and retirement. It also directs attention to the choices made by individuals and families within particular social contexts (Marshall and Mueller 2003). Perhaps most importantly, the life course offers a dynamic approach to social assistance receipt and reminds us that decisions and events experienced in the past affect the resources with which future challenges are faced. The Canadian federal Policy Research Initiative (PRI) has proposed a framework for policy analysis that would examine how these resources are accumulated and depleted across the life course and the times and situations in which social, financial, human capital, or other resources are most likely to be needed. The goal of life-course-sensitive policy would be to develop policies that provide the appropriate kinds of support at appropriate times, and to help people meet their various goals (PRI 2004).

Viewed through a life course lens, the SLID data tell us something about how life course characteristics are reflected in social assistance receipt. Unsurprisingly, family heads with less education and work experience tend to experience longer periods of receipt. Gender is an important aspect of social assistance policy in the sense that women, as lone mothers, are more likely to be recipients, but lone mothers also receive benefits for longer, although the average durations presented above do not seem to be consistent with a popular view of long-term "welfare dependency." Education had much less impact on the predicted durations for lone mothers than other household heads, and this was also true for work experience, although previous years at work did have some effect for lone mothers. What seems to matter more, in terms of the duration of assistance, is a lone mother's marital history. Lone mothers who had been married might be more likely to have spousal or parental benefits. As well, living with other adults, such as her parents, might reflect a source of social support, possibly including help with child care. This suggests that receipt may not be best seen as a simple choice between welfare and work, and that social support and other resources may be more important than human capital for reducing time on social assistance.

The models presented here explicitly investigate how the likelihood of leaving social assistance depends on time, and provide evidence that that the longer one receives social assistance, the less likely one may be to leave it. By using frailty models to test for unobserved heterogeneity, we have been able to show that this is not the spurious result of unobserved characteristics related to long-term receipt, but is likely to be a real reflection of how lone mothers' likelihood of leaving welfare changes with time spent receiving benefits. For lone mothers, predicted exit probabilities in our best models were much higher in the first few months of receipt, and declined afterward. In other words, the longer one receives benefits, the less likely one is to leave social assistance.

This strongly suggests the presence of a "welfare trap" effect in which alternatives to welfare become increasingly difficult to pursue. As described above, the declining hazard rate does not conclusively demonstrate that it is social assistance itself that makes escaping it more difficult with time. Indeed, these results could be reflections of trajectories of poverty or unemployment that include spells of social assistance receipt, while social assistance receipt itself is not the cause of the "welfare trap." Loss of self-esteem or human capital may result from time in poverty or out of the workforce, making it harder to leave social assistance once receipt has begun. Social stigma affecting the likelihood of finding a job, and the psychological resources to deal with a job search, might be caused by poverty as much as by welfare receipt (Contini and Negri 2007). However, there is reason to think that welfare itself might have an inhibiting effect on exits, and this might be the result of the types of welfare policy in place. A system that requires that most other sources of support be exhausted before turning to welfare might not actually support transitions to independence, but instead make those transitions more difficult. The current emphasis on transitions into the first available job (Gorlick and Brethour 1998), including jobs that lone mothers might reasonably know are unlikely to provide long-term "independence" and income enough to support themselves and their children, might lead some women to resign themselves to benefit receipt. This may be particularly the case in the absence of a system of low-cost childcare. Moreover, the highly stigmatized nature of social assistance in Canada, as in the other Anglo-American welfare states, might indeed have effects on exits that are independent of the already stigmatizing effects of poverty and unemployment.

From this perspective, increased difficulty leaving social assistance with time could be thought of as an "unintended outcome" of the decision to receive benefits (Leisering and Leibfried 1999). People may begin receipt in order to realize a particular short-term goal or to deal with a crisis, such as leaving an abusive relationship, but then find it increasingly difficult to exit, particularly through work. This may be the case in general, but even more for lone mothers, whose resources may be more limited and needs greater than those of couples or unattached individuals.

If it is true that education and work experience do not help women leave social assistance faster, or at least do not have strong effects, the recent policies of mandatory work effort and training programs would be somewhat misguided. It may also be that the means and income tests for most programs, which make it necessary to nearly exhaust all savings and liquidate assets before turning to welfare, eliminate at least one advantage that women with previous work histories might have had--accumulated wealth or personal savings. At the same time, the human capital implied by work experience and education may be difficult to exploit because of the requirement that any work should be flexible enough to allow the combination of work and care giving. Although these models are not definitive, once a woman is a lone mother on social assistance, her previous education or work experience might not be translated into assets that can help her leave welfare.

A life course view suggests policies that support people in making transitions and avoiding "traps" of long-term receipt and social exclusion. However, in order to better understand the role of these policies in shaping trajectories of poverty, we suggest two directions for future research. First, social assistance trajectories should be examined and related to poverty trajectories more generally, including income and employment trajectories and the roles of various welfare state programs, such as EI, social assistance, pensions, and disability benefits, within individual lives. This may help to conclusively identify the existence of a "welfare trap" or other negative effects of particular programs, and hopefully lead to policy suggestions for decreasing these effects. Unfortunately, this research would likely depend on the existence of long-term socioeconomic panel data like those that exist in other countries but are not yet available in Canada.

Second, investigation of the resources that help recipients leave social assistance, including social support, various financial resources, health, and others, would improve understanding of the process of exiting welfare, a research topic that is quite undeveloped. This may also require better panel data than are currently available from sources like the SLID, but would also benefit from a qualitative understanding of the strategies and resources used to exit social assistance from the perspective of recipients themselves. Having a better understanding of the goals and constraints in the lives of lone mothers on social assistance may help generate policies that provide the types of support that are most helpful.

Finally, the changing economic situation may affect the way we think about social assistance and the life course. The data analyzed here are from years during which Canada had substantial economic growth, relatively low unemployment, and declining social assistance rates. Recently, rising unemployment suggests that social assistance use will again increase among lone mothers and other family types. This could be more the case than during the recession of the 1980s, when eligibility for EI was easier (Campeau 2005). The question of whether the risk of unemployment and poverty has truly been "democratized" will be only visible in hindsight but the policy focus on the reduction of "dependency" may become less tenable as the availability of work becomes further restricted, and if the composition of the welfare caseload includes more men and two-parent families, and reaches higher into the middle class. In this paper, like other recent analysts, we focus on the importance of social assistance in individual biographies and largely as a response to events, such as divorce or the birth of a child. Significant growth in welfare rates may turn the attention of analysts to the role of social assistance in protecting against broadly felt externally generated economic risks. It may also generate political pressure for a return to higher benefit levels, although that remains to be seen.

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(1) These data were analyzed at the Statistics Canada South Western Ontario Research Data Centre, using the SLID toaster file. The analysis used data from Statistics Canada. The results and views expressed here do net represent the views of Statistics Canada.
Table 1
Sample Description for Event History Models: Major Income
Earners Receiving Social Assistance

                                               Number     %

Census family status at start of first spell
  Married/common-law w/children                   333    17.2
  Married/common-law no children                  115     5.9
  Unattached individual                           806    41.6
  Female lone parent                              635    32.7
  Other                                            51     2.6
Education at start of first spell
  Less than high school                           771    39.7
  High school                                     561    30.8
  Nonuniversity postsecondary                     427    22.0
  University degree                                61     3.14
  Missing/don't know                              120     6.19
Years full-time work experience
  No work experience                              515    26.6
  1-9 years                                       622    32.1
  10-19 years                                     333    17.2
  > 20 years                                      236    12.2
  Don't know/refused                              234    12.1
Father's education
  Less than high school                         1,189    61.3
  High school                                     236    12.2
  Degree or certificate                           165     7.0
  Don't know                                      350    18.0
Disability                                        669    36.0
Province (at start of first spell)
  Newfoundland/Labrador                           116     6.0
  Prince Edward Island                             46     2.4
  Nova Scotia                                     127     6.6
  New Brunswick                                   138     7.1
  Quebec                                          496    25.6
  Ontario                                         553    28.5
  Manitoba                                         89     4.6
  Saskatchewan                                    105     5.4
  Alberta                                          97     5.0
  British Columbia                                173     8.9
Total                                           1,940   100

                                                Mean       SD

Age at start of spell                           36.42    10.90
Monthly provincial SA benefits ($)             847.64   346.40
Regional unemployment rate                       9.87     4.16
Minimum wage ($/hour)                            6.00      .73

Source: SLID Panel 2.
SLID, Survey of Labour and Income Dynamics.

Table 2

Sample Description for Event History Models: Female Lone
Parents Receiving Social Assistance

                                Number        %

Marital status
  Divorced or widowed             177       30.7
  Separated                       137       23.7
  Single, never married           263       45.6
Number of preschool children
  None                            326       56.5
  One                             193       33.5
  More than one                    58       10.1
Education
  Less than high school           190       32.9
  High school                     214       37.1
  Degree or certificate           173       30.0
Work experience
  No work experience              171       29.5
  1-10 years                      231       40.0
  10-19 years                     112       19.3
  > 20 years                       33        5.7
Don't know or refused              30        5.2
  Father's education
  Less than high school           371       64.3
  High school                      85       14.7
  Degree or certificate            40        6.9
  Don't know                       72       12.5
Disability                        125       21.7
Province
  Newfoundland/Labrador            25        4.3
  Prince Edward Island             18        3.1
  Nova Scotia                      45        7.8
  New Brunswick                    49        8.5
  Quebec                          105       18.2
  Ontario                         186       32.2
  Manitoba                         35        6.0
  Saskatchewan                     35        6.0
  Alberta                          22        3.8
  British Columbia                 59       10.2
Total                             577      100

                                  Mean        SD

Age at start                       33.35     8.76
Age at first birth                 22.26     4.46
Monthly SA benefits             1,078.16   175.32
Regional unemployment rate          9.51     3.76
Minimum wage ($/hour)               5.98     8.76

SLID, Survey of Labour and Income Dynamics.
Source: SLID Panel 2.

Table 3

Life Table Estimates of Median Time to Failure, First, Second,
and Third Observed Spells and Total Observed Duration of Social
Assistance Receipt by Major Income Earners, 1996-2001

                   Median
                   months    SE of                       %
                   to exit   median     N       %     Censored

All census family major income earners
  First spell        18.73    .4103   2,401   100       25.8
  Second spell       13.60    .6810     681    28.3     30.3
  Third spell         9.30    .8270     132     5.5     31.8
  Total duration     23.42    .7362   2,401    --       25.8
Female lone parents
  First spell        21.92   1.128      686   100       23.3
  Second spell       12.46   1.366      222    32.4     26.6
  Third spell         9.71   1.361       52     7.8     21.2
  Total duration     27.12   1.047      686    --       23.3

Source: SLID, Panel 2.
SLID, Survey of Labour and Income Dynamics.

Table 4

Cog Proportional Hazards Models of Social Assistance Durations
by Census Family Major Income Earners, 1996-2001

                                       Total observed duration

                                           Hazard            Pr > [chi
                             Coeffecient    ratio     SE      square]

Census family status (married/C-L, with children = ref)
  Married/C-L, no child             .188     1.207   .130      .148
  Unattached individual            4.097    60.159   .190      .000
  Female lone parent               -.412      .662   .080      .000
  Other family type                -.078      .925   .170      .647
Age                                -.012      .988   .003      .001
Education (high school = ref)
  Less than high school            -.084      .919   .068      .219
  Nonuniversity                     .122     1.130   .075      .104
  University                        .188     1.207   .153      .219
  D.K./refused                      .048     1.049   .165      .771
Years Work Experience (1-9 years = ref)
  No work experience               -.239      .787   .076      .002
  10-19 years                       .261     1.298   .081      .001
  > 20 years                        .197     1.218   .106      .062
  D/K or refused                    .103     1.109   .119      .386
Father's education (high school = ref)
  Less than high school            -.086      .918   .082      .294
  Degree or certificate             .097     1.101   .120      .421
  Don't know                        .003     1.003   .103      .980
Disability Status
  (no = ref)                        .949     2.584   .104      .000
Provinces (Ontario = ref)
  Newfoundland/PEI                 -.240      .786   .111      .031
  Nova Scotia                      -.228      .796   .118      .053
  New Brunswick                    -.439      .644   .120      .000
  Quebec                           -.256      .774   .075      .001
  Manitoba                         -.098      .907   .135      .471
  Saskatchewan                      .135     1.144   .123      .272
  Alberta                           .241     1.273   .131      .065
  British Columbia                  .758     2.134   .142      .000
Regional unemployment rate           --        --     --        --
Minimum wage                         --        --     --        --
Unattached individual x
  ln(time)                        -1.341      .262   .059      .000
Disability status x time           -.040      .961   .003      .000
British Columbia x time            -.035      .965   .006      .000
N                                1,940
% Censored                        27.0
- 2LL                         18,089.100

                                        First observed spell

                                           Hazard            Pr > [chi
                             Coefficient    ratio     SE      square]

Census family status (married/C-L, with children = ref)
  Married/C-L, no child             .120     1.127   .122      .328
  Unattached individual            2.905    18.268   .160      .000
  Female lone parent               -.387      .679   .075      .000
  Other family type                -.229      .795   .163      .159
Age                                -.012      .988   .003      .000
Education (high school = ref)
  Less than high school            -.155      .557   .064      .015
  Nonuniversity                     .040     1.040   .071      .577
  University                        .279     1.322   .143      .051
  D.K./refused                     -.228      .796   .153      .137
Years Work Experience (1-9 years = ref)
  No work experience               -.199      .819   .070      .004
  10-19 years                       .161     1.175   .076      .034
  > 20 years                        .281     1.324   .097      .004
  D/K or refused                    .170     1.185   .113      .133
Father's education (high school = ref)
  Less than high school            -.020      .980   .077      .794
  Degree or certificate             .061     1.063   .114      .594
  Don't know                        .079     1.083   .097      .414
Disability Status
  (no = ref)                       -.110      .895   .096      .248
Provinces (Ontario = ref)
  Newfoundland/PEI                  .848     2.335   .202      .000
  Nova Scotia                      -.106      .899   .184      .563
  New Brunswick                     .807     2.240   .266      .002
  Quebec                           -.570      .566   .204      .005
  Manitoba                          .412     1.509   .204      .043
  Saskatchewan                     -.204      .815   .157      .194
  Alberta                           .932     2.539   .192      .000
  British Columbia                  .427     1.532   .127      .001
Regional unemployment rate         -.037      .964   .010      .000
Minimum wage                        .543     1.721   .093      .000
Unattached individual x
  ln(time)                        -1.115      .328   .054      .000
Disability status x time           -.010      .990   .003      .003
British Columbia x time            -.027      .974   .005      .000
N                                1,940
% Censored                        16.1
- 2LL                         21,444.078

Table 5

Cog Proportional Hazards Model of Social Assistance Durations
for Female Lone Parents, 1996-2001

                                      Total observed duration

                                           Hazard            Pr > [chi
                             Coefficient   ratio    SE (B)    square]

Marital Status (Divorced/Vidowed = ref)
Separated                          -.019     .981    .138      .888
Single, never married              -.368     .692    .140      .009
Age at start of spell              -.031     .969    .011      .003
Age at first birth                  .005    1.005    .014      .751
Education (high school = ref)
  Less than high school            -.074     .929    .126      .555
  Degree or certificate             .188    1.207    .122      .123
Years work experience (1-9 years = ref)
  No work experience               -.255     .775    .132      .053
  10-19 years                       .314    1.370    .139      .024
  > 20 years                       -.087     .916    .264      .741
  D/K or refused                    .593    1.810    .243      .015
Father's education (high school = ref)
  Less than high school            -.170     .844    .141      .229
  Degree or certificate             .381    1.463    .210      .069
  Don't know                       -.088     .916    .191      .645
Number of preschool children (0 = ref)
  One                              -.268     .765    .148      .070
  Two or more                      -.353     .702    .191      .064
Disability status
  (no = ref)                       -.382     .683    .128      .003
Provinces (Ontario = ref)
  Newfoundland/PEI                 -.064     .938    .204      .752
  Nova Scotia                      -.259     .772    .206      .208
  New Brunswick                    -.483     .617    .204      .018
  Quebec                           -.301     .740    .151      .046
  Manitoba                          .042    1.043    .215      .845
  Saskatchewan                      .586    1.798    .209      .005
Alberta                             .724    2.064    .254      .004
British Columbia                    .129    1.135    .179      .472
Lives with other adults             .115    1.122    .169      .495
Regional unemployment rate           --       --      --        --
Minimum wage                         --       --      --        --
N                                 577
% Censored                        24.09
- 2LL                          3,398.559

                                        First observed spell

                                           Hazard            Pr > [chi
                             Coefficient   ratio    SE (B)    square]

Marital Status (Divorced/Vidowed = ref)
Separated                          -.113     .893    .132      .392
Single, never married              -.361     .697    .140      .010
Age at start of spell              -.015     .985    .009      .103
Age at first birth                 -.009     .991    .013      .475
Education (high school = ref)
  Less than high school            -.189     .827    .118      .109
  Degree or certificate             .118    1.125    .112      .295
Years work experience (1-9 years = ref)
  No work experience               -.156     .856    .123      .206
  10-19 years                       .125    1.133    .132      .343
  > 20 years                        .239    1.269    .228      .296
  D/K or refused                    .245    1.277    .239      .305
Father's education (high school = ref)
  Less than high school            -.170     .844    .129      .188
  Degree or certificate             .111    1.118    .207      .591
  Don't know                        .017    1.017    .171      .920
Number of preschool children (0 = ref)
  One                              -.091     .913    .132      .491
  Two or more                      -.006     .994    .173      .970
Disability status
  (no = ref)                       -.280     .756    .119      .019
Provinces (Ontario = ref)
  Newfoundland/PEI                 1.227    3.409    .425      .004
  Nova Scotia                      -.144     .566    .327      .660
  New Brunswick                     .695    2.004    .517      .179
  Quebec                           -.475     .622    .378      .209
  Manitoba                          .432    1.541    .382      .257
  Saskatchewan                     -.219     .803    .293      .455
Alberta                            1.232    3.428    .356      .001
British Columbia                    .057    1.059    .170      .737
Lives with other adults             .357    1.429    .155      .021
Regional unemployment rate         -.066     .936    .022      .003
Minimum wage                        .503    1.653    .188      .008
N                                577
% Censored                       13.52
- 2LL                         5,526.5242
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