Abstract
The relationships between several indices of psychosis proneness and bilateral electrodermal orienting were examined in a large group of normal subjects and a heterogeneous group of schizophrenic patients. In the normal group, the Cognitive Disorganisation scale was characterised by shorter latencies and more irregular patterns of responding that may indicate greater disinhibitory processing in the regulation of attentional mechanisms. The Unusual Experiences scale and paranoia (both measures of positive or `active' schizotypy) were associated with a predominance of left hemisphere influences in normal female controls. High Introvertive Anhedonia scores predicted non-responding status in schizophrenic patients and hypo-responsivity in normal controls in support of some previous studies. Overall the results support the specificity and validity of different measures of psychosis proneness and the utility of psychophysiological investigation beyond the psychotic disorders themselves.
© 1997 Elsevier Science B.V.