The kings schizotypy questionnaire as a quantitative measure of schizophrenia liability

Jones, L. A., Cardno, A. G., Murphy, K. C., Sanders, R. D., Gray, M. Y., McCarthy, G., McGuffin, P., Owen, Michael John ORCID: https://orcid.org/0000-0003-4798-0862 and Williams, Julie ORCID: https://orcid.org/0000-0002-4069-0259 2000. The kings schizotypy questionnaire as a quantitative measure of schizophrenia liability. Schizophrenia Research 45 (3) , pp. 213-221. 10.1016/S0920-9964(99)00183-8

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Abstract

We used a new self-report measure, the Kings Schizotypy Questionnaire (KSQ; Williams, M. The psychometric assessment of schizotypal personality. PhD thesis. Institute of Psychiatry, University of London, 1993), to investigate schizotypy as a quantitative measure of familial liability to schizophrenia. The KSQ was administered to 135 DSM-IV schizophrenia probands, 153 of their healthy first-degree relatives, and 267 control subjects. We found that the questionnaire clearly differentiated schizophrenic from non-schizophrenic individuals, but failed to differentiate the relatives from controls. Possible reasons for this include defensive responding among relatives, self-selection bias among relatives, differences in data collection methods, and the possibility that positive aspects of schizotypy may not be closely related to familial liability to schizophrenia.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG) Neuroscience and Mental Health Research Institute (NMHRI)
Subjects:	R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher:	Elsevier
ISSN:	0920-9964
Last Modified:	31 Oct 2022 09:26
URI:	https://orca.cardiff.ac.uk/id/eprint/81029

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