期刊名称：Journal of Modern Applied Statistical Methods
出版年度：2007
卷号：6
期号：2
页码：7
出版社：Wayne State University
摘要：The non-parametric difference score is introduced. It is a workable solution to the problem of analyzing change over two waves (i.e., a pretest-posttest design) when the measures themselves vary over time. An example highlighting the solution’s implementation is provided, as is a discussion of the solution’s assumptions, strengths, and limitations.
