Robins et al 2001

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Unformatted text preview: ly). Forty-three percent of the participants had D2 values greater than what would be expected by measurement error alone (i.e., if their profiles had not changed at all and measurement error was the only factor producing change over time). The distribution of D′2 values ranged from .04 to 5.91, with a mean of 1.36 and a standard deviation of 1.06 (the 25th, 50th, and 75th quartile scores were .60, 1.01, and 1.92, respectively). Forty-three percent of the sample had D′2 values greater than chance. The distribution of D″2 values ranged from .03 to 15.59, with a mean of 3.12 and a standard deviation of 3.14 (the 25th, 50th, and 75th quartile scores were .83, 1.95, and 4.65, respectively). Only 17% of the sample had D″2 values greater than chance. Thus, most of the profile change reflected changes in elevation (i.e., mean level changes across all traits) and scatter (changes in the spread of the scores). Only a small proportion of the sample showed significant change in the shape of their profile.4 DISCUSSION The present research examined personality continuity and change in a sample of young men and women followed longitudinally through college. The findings contribute to a growing literature on how personality changes throughout the life course and provide much needed data on the young adult period. 4. As noted previously, the D″2 index is perfectly inversely related to the within-person correlation. The within-person correlations ranged from –.95 to .97, with a mean of .61 (SD = .39) and a median of .76. The within-person correlation does not have an expected value of 0 (Cronbach & Gleser, 1953; Ozer & Gjerde, 1989). Thus, to estimate the expected value of this correlation in the present sample, we repeatedly sampled Time 1 and Time 2 profiles from different participants and computed the profile correlations. The average value generated by this procedure was .20. Personality Change 631 Personality Change in Young Adulthood In this article, we approached the que...
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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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