Schizotypy, Impulsivity, and Substance Use in Non-Referred Adolescents
Date Issued
2007
Date
2007
Author(s)
Wu, Chi-Shin
DOI
en-US
Abstract
Abstract
Objective: The aim of this study was to evaluate the role of impulsivity on the relationship between schizotypy and substance use in non-referred adolescents.
Methods: A total of 905 middle school students randomly selected from Taipei completed a questionnaire consisting of substance use experience, the Perceptual Aberration Scale (PAS), and the Schizotypal Personality Questionnaire (SPQ), and one of every 6 students systematically selected completed the Continuous Performance Test (CPT) as well. Indexes for schizotypy included the PAS as well as the SPQ and its three factors (Cognitive-Perceptual factor, Interpersonal factor, and Disorganization factor), while indexes for impulsivity included omission error rate, commission error rate, total number of very fast response, and mean reaction time on the CPT.
Results: The results revealed that substance use of either alcohol or tobacco was correlated with higher level in positive schizotypy, particularly the PAS, but not negative schizotypy or disorganization. Higher commission error rates on the CPT were associated with not only substance use but also higher scores on the PAS. Furthermore, the regression coefficient of the PAS score for substance use decreased 55.8% and became non-significant when commission error rate was controlled for. Conclusion: Our results suggest that impulsivity might act as a mediator on the relations of positive schizotypy to substance use and might be a target for the prevention for substance use in persons with schizotypy or schizophrenia.
Subjects
精神分裂病質
連續注意力測驗
誤判率
酒精
香煙
中介因子
Schizotypy
Continuous Performance Test
Commission Error Rate
Alcohol
Tobacco
Mediator
Type
thesis
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