The positive link between executive function and lifetime cannabis use in schizophrenia is not explained by current levels of superior social cognition

PSYCHIATRY RESEARCH

卷:250

Article

Helle, Siri^1,2  Loberg, Else-Marie^1,3,4  Gjestad, Rolf¹  Martine, Ashley M. Schnakenberg^5,6  Lysaker, Paul H.^5,7 

[1] Haukeland Hosp, Div Psychiat, Bergen, Norway

[2] Univ Bergen, Dept Biol & Med Psychol, Bergen, Norway

[3] Haukeland Hosp, Dept Addict Med, Bergen, Norway

[4] Univ Bergen, Dept Clin Psychol, Bergen, Norway

[5] Roudebush Vet Affairs Med Ctr, Indianapolis, IN USA

[6] Indiana Univ Bloomington, Bloomington, IN USA

[7] Indiana Univ Sch Med, Indianapolis, IN 46202 USA

关键词: Schizophrenia;    Cognition;    Cannabis;    Theory of mind;    Executive function;    Emotional intelligence;   

DOI  :  10.1016/j.psychres.2017.01.047

来源: Elsevier

【 摘 要 】

There has been a growing link between a history of cannabis use and neurocognitive performance in patients with schizophrenia. Fewer neurocognitive deficits may be a marker of the superior social cognition needed to obtain illicit substances, or cannabis use may indicate a distinct path to schizophrenia with less neurocognitive vulnerability. This study sought to determine whether the relationship of cannabis use and executive function exists independently of social cognition. Eighty-seven patients with schizophrenia were administered measures of social cognition and executive function. Social cognition was assessed using the Bell-Lysaker Emotion Recognition Test to measure affect recognition, and the Eyes and Hinting Tests to measure theory of mind. Executive function was assessed by the Mental Flexibility component of the Delis-Kaplan Executive Functioning Scale. The relations between the variables were examined with structural equation modeling. Cannabis use positively related to executive function, negatively related to affect recognition, and had no relationship with theory of mind. There were no indirect effects of other illicit substances on amount of regular cannabis use. Alcohol use was related to worse affect recognition. The relationship between cannabis use and better executive function was supported and was not explained by superior social cognition

【 授权许可】

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