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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.
- Fall '10