Former Component V: Clinical Studies: Defining Phenotypes and Early Treatment Trials

This component aimed to refine, operationalize, and test the validity of phenotypes for genetic studies of adolescent antisocial drug dependence and comorbid conditions such as conduct disorder, ADHD, and depression. Additionally, by supporting early Stage I treatment trials this component aimed to generate hypotheses for future grant applications addressing the roles of genes and environments in these disorders.

During the first five years of the center, beginning in 1997, we accomplished the following highlights for Former Component V:

  • Demonstrated mixed post-treatment course in adolescent patients, with a high prevalence of relapse.
  • Provided strong clinical evidence that cannabis produces withdrawal, dependence, and significant reinforcement for self-administration in antisocial youths.
  • Showed that antisocial youths (in comparison with controls) perceive greater acceptance of their drug use by their families.
  • Developed a structured interview on child abuse and neglect for adolescent patients. Showed that scores correlate with substance use, even among controls.
  • Showed good validity for our measures of conduct and substance problems and for personality measures in substance-involved adolescents.
  • Suggested considerable inaccuracy in the parent and teacher reports of hypermotility that often are used to diagnose comorbid ADHD among adolescents with conduct and substance problems.

component I component II component III component IV component VI

Division of Substance Dependence