Cognitive dysfunction and anxious-impulsive personality traits are endophenotypes for drug dependence.

Cognitive Domains Task performance differed significantly over the four cognitive domains (executive function, visual memory, attention control, and response control) across the three groups, as reflected by a highly significant domain-by-group interaction (F=6.7, df=2.6, 371.7, p<0.001), refuting the null hypothesis that all cognitive impairments were attributable to deficits in general intelligence.

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