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Addict Behav. 2016 Sep;60:235-41. doi: 10.1016/j.addbeh.2016.04.016. Epub 2016 Apr 22.

Altered developmental trajectories for impulsivity and sensation seeking among adolescent substance users.

Author information

  • 1Department of Psychology, The University of Southern Mississippi, Hattiesburg, MS, United States.
  • 2Department of Psychiatry, The University of Texas Health Science Center at San Antonio, San Antonio, TX, United States.
  • 3The Methodology Center, The Pennsylvania State University, State College, PA, United States.
  • 4Department of Psychiatry, The University of Texas Health Science Center at San Antonio, San Antonio, TX, United States; Research Imaging Institute, The University of Texas Health Science Center at San Antonio, San Antonio, TX, United States.
  • 5Department of Psychiatry, The University of Texas Health Science Center at San Antonio, San Antonio, TX, United States. Electronic address: doughertyd@uthscsa.edu.

Abstract

A number of studies have associated impulsivity and sensation seeking with level of substance use and risk for developing a substance use disorder. These relationships may be particularly apparent during adolescence, when developmental changes in impulsivity and sensation seeking occur at the same time as increased opportunities for substance use. To examine this, the current study measured impulsivity and sensation seeking from pre-adolescence to mid-adolescence in a sample of youth, the majority of whom were identified as being at risk for developing a substance use disorder based on their family history of substance use disorders. Youth were separated into those who did (n=117) and did not (n=269) initiate substance use by mid-adolescence. Results showed that substance users were more impulsive and more sensation seeking during pre-adolescence, prior to any significant substance use, and that greater sensation seeking in pre-adolescence was related to heavier substance use by mid-adolescence. In addition, developmental trajectories for substance-using youth showed a greater increase in sensation seeking but a more modest decrease in impulsivity from pre-adolescence to mid-adolescence. Taken together, these results indicate that increased impulsivity and sensation seeking is apparent in adolescent substance users as early as pre-adolescence, that the difference between substance users and non-users becomes larger across early adolescence as their developmental trajectories diverge, and that greater sensation seeking in pre-adolescence may predict increased substance use by mid-adolescence.

KEYWORDS:

Adolescence; Impulsivity; Sensation seeking; Substance abuse

PMID:
27174219
PMCID:
PMC4904737
[Available on 2017-09-01]
DOI:
10.1016/j.addbeh.2016.04.016
[PubMed - in process]
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