PSY230H5 Lecture Notes - Lecture 9: Multiple Dispatch, Meta-Analysis, Longitudinal Study
Document Summary
Fundamental assumption of personality psychology- personality traits are stable. Retest interval: time interval between two assessments of personality (eg. one month, one year) Stability: retest correlations over longer time periods (years) True stability: retest correlations over longer time periods adjusted for unreliability. Meta-analysis: meta-analysis: combines results of several original studies, original studies: assessed personality traits repeatedly over longer time intervals (at least one year apart, data in the meta-analysis: 3,217 correlation coefficients from 152 longitudinal studies of personality. Measurement error: reduces correlations even if personality has not changed. Variability: temporary changes due to transient situational influences (eg. bad hair day) More than two repeat assessments are needed to separate measurement error and variability from change. Stability and change of the big 5: self-perception vs. actual personality. Requires a multi-method approach (self-ratings and informant ratings) 135 participants and their spouses rated personality twice (6 year retest interval) Age differences in the big 5 personality traits: cross-sectional studies.
