Tendencies toward impulsivity in early adolescence are linked with a variety of poor outcomes in later adolescence, including antisocial personality disorder and alcohol use disorder. However, by the time teenagers reach mid-adolescence, it may be too late to target impulsivity to prevent the development of these behavioral disorders.

Past research has shown the link between impulsivity and these disorders, but not how it unfolds. Now, a new study based on data tracking hundreds of Philadelphia youth over more than a half-dozen years details the complex pathway connecting impulsivity, alcohol use, and antisocial behavior.

The findings suggest that targeting adolescents who exhibit high levels of impulsivity in early adolescence could halt a cascading chain of events that leads to late-adolescence antisocial personality disorder (APD) and alcohol use disorder (AUD).

“Kids with impulse control problems are at risk for a variety of adverse outcomes, such as drug use, acting-out behavior, and antisocial behavior,” said study co-author Dan Romer, research director of the Annenberg Public Policy Center of the University of Pennsylvania. “What we’ve found is that you’ve got to start mitigating impulsivity before it starts influencing behaviors that lead to substance use and antisocial behavior disorders. Once adolescents are on a trajectory of engaging in those behaviors, it may become more difficult to prevent disorders later in adolescence than it is to treat impulsivity itself.”

The open-access study, published this week in the Journal of Adolescent Health, was conducted by researchers from the Annenberg Public Policy Center (APPC), University of Amsterdam, University of Oregon, and Children’s Hospital of Philadelphia.

The Philadelphia Trajectory Study

The study is based on data from the Philadelphia Trajectory Study, a six-wave study during which participants ages 10 to 12 were interviewed annually from 2004 to 2010, with a final two-year follow-up in 2012. The current study relies on five years of self-reported data, from waves 3 through 6. During the final wave the participants were 18 to 21 years old. The study was based on data from 364 adolescents (at wave 3) of diverse ethnic backgrounds.

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