The results showed that estimates of personality

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Unformatted text preview: nds to increase as the age of the sample increases and to decrease as the time interval between observations increases (Conley, 1984). The results showed that estimates of personality stability (unadjusted for measurement error) increased from .31 in childhood to .54 during the college age period, to .64 at age 30, and then reached a plateau around .74 between ages 50 and 70. Roberts and DelVecchio (2000) also estimated expected levels of rank-order stability for various time periods for a hypothetical sample of 20-year-olds. They estimated that rank-order stability should average around .52 over a 5-year period. Combining the age and time estimates provided by Roberts and DelVecchio, we would expect to find test-retest estimates in the .50s over the 4-year period examined in the present study. Structural and Ipsative Change Only a handful of studies have examined structural (Costa & McCrae, 1997; Mortimer et al., 1982) or ipsative personality change (Asendorpf & Van Aken, 1991; Block, 1971; Ozer & Gjerde, 1989), and the findings generally show relatively high levels of stability. However, none of these studies examined personality change during young adulthood using a measure of the Big Five. Thus, there is no basis for forming hypotheses about the expected levels of structural or ipsative change in the present study. METHOD Sample and Procedure This research uses data from the Longitudinal Study of Personality and SelfEsteem Development, an ongoing study of a cohort of individuals who entered the University of California at Berkeley in 1992. During their 1st week of school, participants were contacted in class and offered partial course credit for completing a set of questionnaires. In the 4th year of college, participants were contacted by mail and asked to complete an extensive questionnaire in exchange 624 Robins et al. for $20. Four hundred eighty-nine individuals completed a measure of the Big Five in the first assessment, and 303 individuals completed the Big Five measure in the Year 4 assessment. Our analyses focused on a subsample of p...
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This note was uploaded on 12/02/2010 for the course PSYCH PSY BEH P2 taught by Professor Susanturkcharles during the Fall '10 term at UC Irvine.

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