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who completed the relevant measures at both time periods and who were aged
18 or 19 at the time of the first assessment (N = 270).1
The sample of participants included in the present study is diverse in terms
of ethnicity (41% Asian, 37% Caucasian, 13% Chicano/Latino, 4% African
American, 5% Missing/Other/Multiracial), gender (59% female), socioeconomic status (20% came from families with 1992 household incomes below
$25,000 and 16% from families with household incomes above $100,000), and
academic ability (combined SAT scores ranged from 650 to 1540, M = 1198,
SD = 171). Measuring Personality
The Big Five were assessed using the 60-item NEO-Five Factor Inventory
(NEO-FFI; Costa & McCrae, 1992). Items were rated on a 5-point scale ranging
from 1 (not very true of me) to 5 (very true of me).2 The NEO-FFI was
administered during the 1st week of college and at the end of the 4th year.
Coefficient alpha reliabilities were .83 and .82 for Extraversion, .76 and .77 for
Agreeableness, .81 and .83 for Conscientiousness, .84 and .85 for Neuroticism,
and .77 and .75 for Openness to Experience, respectively for the two assessments. As a second measure of reliability, we collected short-term, test-retest
data on the NEO-FFI. Specifically, we administered the NEO-FFI to a separate
1. All of the findings to be reported held when participants older than 19 were included
in the analyses. There were no significant differences between individuals who did and
did not complete the personality measures at both time points, except that participants
scored higher on Conscientious (M = 3.52, SD = .56) than non-participants (M = 3.28,
SD = .59), t = 4.45, p < .05. Participants were marginally more likely to be women than
nonparticipants (59% vs. 52%, p = .08); participants had marginally higher SAT scores
than nonparticipants (M = 1198 vs. 1166, p = .05); participants and nonparticipants did
not differ in socioeconomic status, t < 1. Participants and nonparticipants did not differ
in variance on any of the...
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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