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- Publisher
- Annual Reviews
- Copyright
- Copyright © 2008 by Annual Reviews. All rights reserved
- ISSN
- 1548-5943
- eISSN
- 1548-5951
- DOI
- 10.1146/annurev.clinpsy.4.022007.141157
- pmid
- 18370620
- Publisher site
- See Article on Publisher Site
Abstract
Research on substance use disorders is often compartmentalized, focused on understanding addiction to one substance or substance class at a time. Although this approach has contributed significantly to knowledge about addictions, early-onset substance use disorders appear to share common etiology with each other and with other disorders, traits, behaviors, and endophenotypes associated with behavioral disinhibition. We propose that a common genetic liability to behavioral disinhibition underlies the co-occurrence of these externalizing attributes. This liability is expressed in part through brain mechanisms related to cognitive control, impulsivity, and sensitivity to reward, all of which are maturing during adolescence. During this important transitional period, problem behaviors emerge, including the initiation of substance use. Exposure to various environmental risks further amplifies the risk associated with the common liability, increasing the likelihood of addiction generally. Specific environmental and genetic factors ultimately contribute to the differentiation among externalizing disorders.
Journal
Annual Review of Clinical Psychology – Annual Reviews
Published: Apr 27, 2008