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Schizoid personality, inter‐hemispheric transfer, and left hemisphere over‐activation
Author(s) -
Raine Adrian,
Manders Duncan
Publication year - 1988
Publication title -
british journal of clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.479
H-Index - 92
eISSN - 2044-8260
pISSN - 0144-6657
DOI - 10.1111/j.2044-8260.1988.tb00798.x
Subject(s) - dichotic listening , psychology , laterality , personality , audiology , lateralization of brain function , population , schizotypy , developmental psychology , cognitive psychology , neuroscience , social psychology , medicine , demography , sociology
This study assesses the external validity of schizoid personality against multiple measures of cerebral laterality designed to distinguish between left hemisphere (LH) over‐activation, LH damage and inter‐hemisphere transfer deficit interpretations of schizotypy. Questionnaire measures of schizoid personality were assessed in an undergraduate population and related to laterality measures of both verbal and nonverbal dichotic listening, haptic inter‐ and intra‐manual matching, employment of left and right hemisphere strategies during the haptic task, lateral eye‐movements, and left and right ear auditory thresholds. A high score on a composite index of schizoid personality was significantly related to greater asymmetry (right ear advantage) in verbal dichotic listening, the use of LH strategies, and lower right ear thresholds, an overall pattern of results indicating LH over‐activation in schizoids. It is suggested that studies comparing schizophrenic patients with normal controls minimize the likelihood of obtaining group differences if they fail to take into account schizoid personality in the controls.