Introduction: Impulsivity is strongly related to the development of adolescent substance use. Therefore, understanding factors that influence impulsive characteristics is important for the development of prevention and intervention programs. Intervention and prevention programs focused on factors that influence impulsive characteristics are especially important for those at particularly high risk for the expression of impulsivity—those with a family history of substance use disorder. A factor of particular interest is family functioning (FF).
Aim: To examine FF as a mediator of relations between having a family history of substance use disorder and impulsivity.
Methods: Participants included a majority Hispanic sample of preadolescent boys and girls (mean age 10.99, SD=0.84) recruited from the community who did (FH+) and did not (FH−) have a family history of substance use disorder. FH status and the quality of FF were compared at the initial visit with impulsiveness assessed a year later.
Results: Results showed that FH+ children had worse FF; worse FF was related to higher levels of impulsivity, and higher levels of impulsivity among FH+ children were due to the influence of FF on levels of impulsivity. In other words, FF mediated relations between having a family history of substance use disorder and impulsivity.
Conclusions: These results indicate that higher levels of impulsivity in FH+ children are due in part to worse FF.
Departments of *Psychiatry
†Epidemiology and Biostatistics
‡Research Imaging Institute, The University of Texas Health Science Center at San Antonio, San Antonio, TX
Research supported by NIDA of the National Institutes of Health under award numbers R01DA026868, R01DA033997-02S2, T32DA031115.
The authors declare no conflict of interest.
Reprints: Stacy R. Ryan, PhD, Department of Psychiatry, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, MC 7793, San Antonio, TX 78229-3900 (e-mail: email@example.com).