Developmental trajectories of impulsivity and their association with alcohol use and related outcomes during emerging and young adulthood I.
BACKGROUND
Research has documented normative patterns of personality change during emerging and young adulthood that reflect decreases in traits associated with substance use, such as impulsivity. However, evidence suggests variability in these developmental changes.


METHODS
This study examined trajectories of impulsivity and their association with substance use and related problems from ages 18 to 35. Analyses were based on data collected from a cohort of college students (N = 489), at high and low risk for AUDs, first assessed as freshmen at a large, public university.


RESULTS
Mixture modeling identified five trajectory groups that differed in baseline levels of impulsivity and developmental patterns of change. Notably, the trajectory group that exhibited the sharpest declines in impulsivity tended to display accelerated decreases in alcohol involvement from ages 18 to 25 compared to the other impulsivity groups.


CONCLUSIONS
Findings highlight the developmental nature of impulsivity across emerging and young adulthood and provide an empirical framework to identify key covariates of individual changes of impulsivity.
Department of Psychological Sciences, University of Missouri-Columbia and Midwest Alcoholism Research Center, Columbia, Missouri 65211-0001, USA. littlefielda@missouri.edu
Andrew K
AK
Littlefield
Kenneth J
KJ
Sher
Douglas
D
Steinley
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000428:Alcohol Drinking / Q000523:psychology*; D000437:Alcoholism / Q000209:etiology / Q000523:psychology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007175:Impulsive Behavior / Q000150:complications / Q000523:psychology*; D008137:Longitudinal Studies; D008297:Male; D011446:Prospective Studies; D012307:Risk Factors; D019966:Substance-Related Disorders / Q000209:etiology / Q000523:psychology; D011795:Surveys and Questionnaires; D016896:Treatment Outcome; D055815:Young Adult