期刊名称：Measurement Instruments for the Social Sciences
印刷版ISSN：2523-8930
出版年度：2022
卷号：4
期号：1
页码：1-14
DOI：10.1186/s42409-021-00027-6
语种：English
摘要：The Optimism–Pessimism Short Scale–2 (SOP2) described in this article measures the psychological disposition ofoptimism with two items. SOP2 is the English-language adaptation of an originally for the German languagedeveloped scale. Because an empirical validation of this English-language SOP2 was hitherto lacking the aim of thepresent study was to assess the psychometric properties (objectivity reliability validity) of the English-languageadaptation and to investigate measurement invariance across both language versions using heterogeneous quotasamples from the UK and Germany. Our results show that the English-language adaptation has satisfactory reliabilitycoefficients and is correlated with 10 external variables in the study (e.g. self-esteem Emotional Stability lifesatisfaction). Moreover scalar measurement invariance of the scale holds when comparing the UK and Germanyimplying the comparability of latent (co)variances and latent means across the two nations. As an ultra-short scalewith a completion time of < 20 s SOP2 lends itself particularly to the assessment of dispositional optimism insurvey contexts in which assessment time or questionnaire space are limited. It can be applied in a variety ofresearch disciplines such as psychology sociology or economics.
