Sociodemographic Effects on the Test-Retest Reliability of the Big Five Inventory

Autor(en): Gnambs, Timo
Stichwörter: age; Big Five; education; GERMAN; measurement error; PERSONALITY; Psychology; Psychology, Applied; SAMPLE; test-retest reliability
Erscheinungsdatum: 2016
Herausgeber: HOGREFE & HUBER PUBLISHERS
Journal: EUROPEAN JOURNAL OF PSYCHOLOGICAL ASSESSMENT
Volumen: 32
Ausgabe: 4
Startseite: 307
Seitenende: 311
Zusammenfassung: 
Psychometric properties of self-report scales can be affected by sociodemographic differences among respondents. For example, factor structures of established personality scales tend to be distorted in samples with less formal education. Whether test-retest reliabilities are comparably affected is of yet not well known. Therefore, this study examined the measurement precision of a short Big Five instrument in a diverse sample of the German population. A sample of 1,696 (50% women) participants reported on their personality twice within an interval of 10 weeks. The median test-retest reliability for the five traits, r(tt) = .66, was notably smaller than previously reported coefficients from college students, median r(tt) = .78. Moderator analyses identified modest effects of age and educational attainment on these reliability estimates, whereas sex showed no differential impact. These results highlight that test-retest reliabilities derived from student samples should not be generalized to sociodemographically diverse groups of respondents.
ISSN: 10155759
DOI: 10.1027/1015-5759/a000259

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