Journal
JOURNAL OF ABNORMAL PSYCHOLOGY
Volume 114, Issue 3, Pages 331-345Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0021-843X.114.3.331
Keywords
depressive symptoms; general growth mixture model; developmental trajectories
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Heterogeneity in the longitudinal course of depressive symptoms was studied through the use of general growth mixture modeling for young men in the Oregon Youth Study (N = 206), who ranged in age from 15 to 24 years. Four trajectory classes were identified: the very-low, the moderate-decreasing, the high-decreasing, and the high-persistent classes. The 3 lowest classes differed primarily quantitatively with the initial level or mean level across time being the major determinant of class differences, whereas the high-persistent class appeared qualitatively different in terms of long-term developmental trends and variation. Findings from univariate and multivariate analyses revealed specific effects of childhood, parental, contextual, and individual risk factors on the class membership as well as on the growth within each trajectory class.
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