In sum, the results suggest that individuals who decreased at steeper rates in the respective constructs of impulsivity and neuroticism from ages 18 to 35 tended to also decrease at steeper rates in problematic alcohol involvement across this time span, whereas individuals who failed to decrease or increased in the respective constructs of impulsivity and neuroticism tended to show shallower decreases or increases in problematic alcohol involvement. Results also suggest that changes in extraversion are not associated with changes in problematic alcohol involvement across this time span. Since the primary aim of this article is to examine the correlated change between alcohol involvement and personality, LGMs involving extraversion have been excluded from all further analyses.
