Journal article

Taxometric analysis supports a dimensional latent structure for schizotypy

David Rawlings, Ben Williams, Nick Haslam, Gordon Claridge

PERSONALITY AND INDIVIDUAL DIFFERENCES | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2008

Abstract

The existence of a discrete class of people vulnerable to schizophrenia spectrum disorders is the most replicated finding of taxometric research. Evidence for such a "taxon" has been obtained with diverse measures of schizotypy in clinical, high-risk, and normal samples. However, recent demonstrations that skewed indicators of a latent dimension can yield a spuriously taxonic pattern of results may call some of these findings into question. Normal adults (N = 1073) completed measures of positive (perceptual aberration, magical ideation) and negative (physical and social anhedonia) components of schizotypy. Taxometric curves resembled those obtained previously, but when a simulation procedure..

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