Objective: Many young adults engage in heavy or problem drinking, but it is
unclear who will continue problem drinking into adulthood. This study foll
owed a general population sample in order to study patterns of problem drin
king over time, to identify differences among drinking groups, to test a mo
del differentiating youth-limited from developmentally-persistent problem d
rinkers, and to examine adult outcomes. Method: Data were from the Health a
nd Human Development Project; subjects (N = 1,073) were in three age cohort
s (age 18-25; age 21-28; age 24-31). Based on use and consequences data fro
m two assessment intervals, cluster analyses were performed. Results: Clust
er analyses yielded four drinking groups: youth-limited problem drinkers, s
table moderate drinkers, stable low drinkers and developmentally-persistent
problem drinkers. Rates of youth-limited problem drinking peaked in the mi
ddle cohort and rates of developmentally-persistent problem drinking decrea
sed in the oldest cohort. Discriminant analysis revealed that developmental
ly-persistent problem drinkers in each age cohort are more likely to be mal
e, to show high disinhibition, and to experience a high level of problem be
haviors. Youth-limited problem drinkers were similar to developmentally-per
sistent problem drinkers on many young adult characteristics and adult outc
omes. Developmentally-persistent problem drinkers in each age cohort contin
ued to show higher levels of problem behaviors in adulthood than youth-limi
ted problem drinkers. Conclusions: Most young adults show continuity of dri
nking patterns. Although developmentally-persistent problem drinkers did no
t differ from youth-limited problem drinkers in adopting adult roles, their
continued experience of many problem behaviors suggests that they fail to
adopt the role of greater conventionality in adulthood.