Personality and hemisphere function: Two experiments using the dichotic shadowing technique |
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| Affiliation: | 1. Department of Psychology, University of California Riverside, United States;2. Department of Psychological and Brain Science, Indiana University Bloomington, United States;3. Indiana University Purdue University Indianapolis, Department of Psychology, United States;4. Roudebush VA Medical Center, United States;5. Indiana University School of Medicine, Department of Psychiatry, United States;1. Department of Psychology, Faculty of Medicine, University of Castilla La Mancha, Albacete 02006, Spain;2. School of Psychology, University of Exeter and Sir Henry Welcome Building for Mood Disorders Research, Exeter, EX4 4QG, UK |
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| Abstract: | Two experiments using nonpsychiatric samples employed the auditory dichotic shadowing procedure to examine the relationship between psychotic predisposition or symptomatology and differential hemisphere performance. In experiment 1, right-handed Ss with high scores on the EPQ P-scale failed to show the normal right-ear preference for verbal material. This findings was not replicated in experiment 2, where there was a marginally significant tendency for right-handed Ss with high scores on the Schizotypy Scale (STA) to fail to show the normal right-ear preference. Different patterns of results were obtained for males and females in experiment 2. The results provide partial support for earlier studies on the relationship between schizotypy and differential hemisphere function. It is argued that the different patterns of means obtained in these and other studies in this area are best explained by a structural-dynamic model of hemisphere functioning. |
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