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Associations between heavy drinking and changes in impulsive behavior among adolescent boys
Helene R White1, Naomi R Marmorstein, Fulton T Crews
1Center of Alcohol Studies, Rutgers University, Piscataway, New Jersey, USA. hewhite@rci.rutgers.edu
Alcoholism, Clinical and Experimental Research
|November 16, 2010
Summary
Heavy drinking in adolescence may increase impulsive behavior, particularly in boys with moderate impulsiveness. This suggests a complex relationship influenced by individual developmental trajectories of impulsivity.
Area of Science:
- Developmental Psychology
- Neuroscience
- Addiction Research
Background:
- Impulsive behavior in adolescence predicts later alcohol use disorders (AUDs).
- Heavy drinking may influence impulsive behavior through effects on brain development or other mechanisms.
- Understanding the interplay between adolescent drinking and impulsivity is crucial for prevention and intervention.
Purpose of the Study:
- To investigate the longitudinal relationship between heavy drinking during adolescence and changes in impulsive behavior.
- To examine how this association varies based on an individual's developmental trajectory of impulsiveness.
- To identify specific risk groups for increased impulsivity following heavy alcohol consumption.
Main Methods:
- Longitudinal study of 503 boys from age 8 to 25, with annual assessments.
- Defined heavy drinking by a blood alcohol concentration (BAC) of 0.08% or higher.
- Utilized group-based trajectory analysis to identify distinct patterns of impulsivity development and analyzed heavy drinking as a time-varying covariate.
Main Results:
- Identified four distinct trajectories of impulsive behavior from age 9 to 17.
- Less impulsive groups showed lower rates of heavy drinking, peak BACs, and alcohol dependence.
- Among boys on a moderate impulsivity trajectory, heavy drinking was significantly associated with increased impulsivity in the subsequent year.
Conclusions:
- The link between heavy drinking and increased impulsivity is contingent on an individual's baseline impulsivity levels.
- Boys with moderate impulsivity trajectories appear to be at the highest risk for heightened impulsivity after heavy drinking.
- Further research is warranted to elucidate the specific mechanisms underlying this association.
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