Does the Schizotypal Personality Questionnaire reflect the biological–genetic vulnerability to schizophrenia?

• Published in: Schizophrenia research Vol. 54; no. 1; pp. 39 - 45
• Main Authors: Vollema, M.G, Sitskoorn, M.M, Appels, M.C.M, Kahn, R.S
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.03.2002; Elsevier Science
• Subjects: Adult; Biological and medical sciences; Biological–genetic vulnerability; Female; Genetic Predisposition to Disease; Humans; Male; Medical sciences; Psychology. Psychoanalysis. Psychiatry; Psychometrics. Diagnostic aid systems; Psychopathology. Psychiatry; Schizophrenia; Schizophrenia, Disorganized - diagnosis; Schizophrenia, Disorganized - genetics; Schizotypal Personality Disorder - diagnosis; Schizotypal Personality Disorder - genetics; Schizotypal Personality Questionnaire; Severity of Illness Index; Surveys and Questionnaires; Techniques and methods; Schizophrenia; Biological–genetic vulnerability; Schizotypal Personality Questionnaire; Human; Questionnaire; Family study; Parent; Prediction; Psychometrics; First degree relatives; Vulnerability; Sibling; Genetic determinism; Psychosis; Test validation; Risk factor; Genetics; Inaugural sign; Comparative study

We investigated whether the Schizotypal Personality Questionnaire (SPQ) [Schizophr. Bull. 17 (1991) 555.] could be an indicator of the biological–genetic vulnerability to schizophrenia. We hypothesized that the mean scores on three dimensions of the SPQ of different groups of relatives of patients w...