Objective: Impulsivity and subjective response to alcohol are predictors of alcohol use disorder. The purpose of this study was to replicate and extend prior research examining relationships between impulsivity and subjective response patterns. In addition, impulsivity and initial subjective response patterns were examined in relation to current heavy episodic drinking and alcohol-related problems.
Method: Data were cross-sectional, retrospective self-reports, obtained from baseline assessments from five studies affiliated with the Yale Center for the Translational Neuroscience of Alcoholism. Analyses were conducted in a sample restricted to nondependent, young adults (n = 186) and in a larger, more heterogeneous sample (n = 363). Data were analyzed using hierarchical regression in three separate types of models.
Results: In the young adult, nondependent sample, impulsivity was a statistically significant predictor of lower recent sedative subjective response. Impulsivity and initial sedative subjective response patterns were statistically significant predictors of past-year heavy drinking. Impulsivity, but not initial subjective response patterns, was a statistically significant predictor of past-year alcohol-related problems. Findings in the larger sample were similar.
Conclusions: More-impulsive individuals may perceive less sedation from alcohol, which is associated with increased heavy drinking. However, higher levels of impulsivity may be more responsible than diminished subjective response for poor decision making that results in negative drinking consequences. These results suggest that high impulsivity and certain subjective response patterns are worthy intervention targets.