Loas, Dimassi, Monestes, and Yon (2013) studied a version of the Cognitive Slippage Scale and the Schizotypal Ambivalence Scale in support of the view that thought disorder and withdrawal are highly correlated with schizotypy, a central concept in investigations of the vulnerability for schizophrenia. As a brief comment on Loas, et al., I will draw attention to the need for expanding studies of schizotypal traits and the possibility of using these scales with adolescents and young adults who are developing personality disorders as well as with individuals who have experienced prodromal phases of psychosis. Investigations of the Cognitive Slippage Scale and the Schizotypal Ambivalence Scale might be enhanced by conducting studies with individuals at different points on the psychosis continuum, including those who have developed schizophrenia and other psychotic disorders, as well as with their first-degree relatives.
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