The Factorial Structure of Schizotypy: Part II. Cognitive Asymmetry, Arousal, Handedness, and Sex

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Abstract
We replicate relations between factors of schizotypy and cognitive asymmetry patterns assessed with recognition memory for words versus faces, and with arousal levels assessed with self-report scales. The withdrawn factor or subscales of loneliness and constricted affect were associated as before with a right hemisphere, face advantage asymmetry, as was physical anhedonia in males. Subjects with the opposite asymmetry and those high on the active factor—eccentricity and odd speech—had high self-report activation scores. These relations better characterized males who also had higher scores on the asymmetry-related factors. Females had higher scores on the third unreality factor—unusual perceptions and odd beliefs—which showed inconsistent relations with cognitive asymmetry. Non-right-handedness was associated with both hemisphere asymmetry patterns suggesting that the structural mechanism responsible for non-right-handedness is associated with bidirectional hemispheric functional imbalance. The results support the importance of patterns of functional asymmetry in underpinning different aspects of schizotypy.

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