PSY230H5 Lecture Notes - Lecture 5: Meta-Analysis, Convergent Validity, Longitudinal Study
Document Summary
Fundamental assumption of personality psychology: personality traits are stable. [assume that we measure conscientiousness on a scale that is equivalent to height in cm] A lot less (8 cm shorter: somewhat less (4 cm shorter, the same (0 cm, somewhat more (4 cm taller), a lot taller (8 cm taller) R=. 4 for elementary, r=. 5 for middle school, r=6 for highschool. There is might be a stable variable that has long term effects on whether people play an instruments on not. Assessed with retest correlations. - not to measure reliability. Real change- is the correlation less than the reliability of the measure. Retest interval: the time interval between two assessments of personality (e. g. , 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: a meta-analysis combines results of several original studies. Assessed personality traits repeatedly over longer time intervals (at least one year apart)
