This study explored the criterion-validity of the Cognitive Slippage Scale (CSS) and the Schizotypal Ambivalence Scale (SAS). 27 first-degree relatives of individuals with schizophrenia (9 males, 18 females; M age=45.3 yr., SD=13) were compared with 30 first-degree relatives of non-psychotic patients (15 males, 15 females; M age = 44.6 yr., SD = 11.6) on the French versions of the CSS and SAS. The former group, who is at high risk for schizophrenia, had significantly higher scores than the latter group on both scales.
First-degree relatives of patients with schizophrenia may score higher on the Frankfurt Complaint Questionnaire (FCQ) than controls. The present study was designed to provide evidence of validity for the French version of the 24-item subscale of the Frankfurt Complaint Questionnaire (FCQ-24). In 27 first-degree relatives of patients with schizophrenia (high-risk group) and 30 controls, the high-risk group scored significantly higher on the FCQ, as expected.
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