Wendy Johnson was supported in conducting this research by a University of Minnesota Doctoral Dissertation Fellowship. She now holds a Research Council of the United Kingdom Fellowship.
Personality in Germany and Minnesota: An IRT-Based Comparison of MPQ Self-Reports
Article first published online: 8 APR 2008
© 2008, Copyright the Authors. Journal compilation © 2008, Blackwell Publishing, Inc.
Journal of Personality
Volume 76, Issue 3, pages 665–706, June 2008
How to Cite
Johnson, W., Spinath, F., Krueger, R. F., Angleitner, A. and Riemann, R. (2008), Personality in Germany and Minnesota: An IRT-Based Comparison of MPQ Self-Reports. Journal of Personality, 76: 665–706. doi: 10.1111/j.1467-6494.2008.00500.x
- Issue published online: 8 APR 2008
- Article first published online: 8 APR 2008
ABSTRACT We compared personality across cultures to explore the extent of cultural differences. This study used samples matched on gender and age from Germany and Minnesota to compare traditional scale scores and IRT-based parameters for Tellegen's (1982) Multidimensional Personality Questionnaire scales. Because the samples consisted of twins, we were able to replicate the findings from the subsamples consisting of one member of each pair with the subsamples consisting of their co-twins. When the full scales were considered, Germans were higher in Aggression and Absorption and Minnesotans were higher in Well-being, Control, and Traditionalism, but, except for those in Traditionalism, different item-difficulty parameters explained most of these differences. IRT highlighted less than optimal scale properties as well as differentially functioning items. We discuss the theoretical implications of these findings.