Preparatory interval effects on the reaction time performance of introverts and extraverts |
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| Affiliation: | 1. Department of Psychiatry, University of Illinois at Chicago, 1601 West Taylor, Suite 489, Chicago, IL 60612, United States;2. Department of Psychiatry, Trinity College Dublin, Dublin, Ireland;3. Institute of Psychiatry, Psychology & Neuroscience (IoPPN) King''s College, London, United Kingdom;4. Jesse Brown Veterans Affairs Medical Center, Chicago, IL, United States;1. Department of Translation and Language Sciences, Universitat Pompeu Fabra, C/ Roc Boronat, 138, 08018 Barcelona, Spain;2. FIDMAG Germanes Hospitalàries Research Foundation, C/ Dr. Antoni Pujadas, 38, 08830 Sant Boi de Llobregat, Barcelona, Spain;3. CIBERSAM, Centro de Investigación Biomédica en Red de Salud Mental, Spain;4. Benito Menni Complex Assistencial de Salut Mental, C/ Dr. Antoni Pujadas, 38, 08830 Sant Boi de Llobregat, Barcelona, Spain;5. Hospital Sant Rafael, Passeig de la Vall d''Hebron, 107, 08035 Barcelona, Spain;6. Parc de Salut Mar, Passeig Marítim 25-29, 08003 Barcelona, Spain;7. Centro Neuropsiquiátrico N. S. del Carmen, Camino del Abejar, 100, 50190 Zaragoza, Spain;8. Catalan Institute for Advanced Studies and Research, ICREA, Passeig de Lluís Companys, 23, 08010 Barcelona, Spain |
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| Abstract: | This study examined the effect of preparatory interval (PI) lenght on the reaction time (RT) of extraverts (Es) and introverts (Is). In addition to displaying a significantly slower overall mean RT than Es, Is also tended to be more adversely affected by longer PI duration (P = 0.06). That is, unlike Es, Is tended to show a much greater increase in RT to an 8-sec PI duration as compared to a 4-sec PI duration. Examination of the influence of psychoticism (P) and neuroticism (N) effects on the performance of Es and Is indicated that N had no effect for this sample of subjects. However, high levels of P tended to lead to a decrease in the overall mean RT of ES while it tended to increase the RT scores of Is. P did not, however, have an effect on the PI responding of Es and Is. Discussion of these results centered on certain parallels between the performance of introverts and schizophrenic subjects concerning deficits in attention during RT performance. |
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