Abstract
Twenty subjects, half having high extraversion and the other half having low extraversion scores on the Eysenck Personality Inventory, performed a simple reaction time task in which the warning stimulus was a light and the imperative stimulus was a tone. Beat-by-beat analysis showed significantly different response patterns between the two groups in time of onset, magnitude, and duration of the cardiac responses. The extraversion measures were found to relate to central-nervous-system-strength types and to indicate relative strength of central inhibitory processes, as reflected by cardiac activity.
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Fried, R., Fried, B. Cardiac activity in a simple reaction time task. Pav. J. Biol. Sci. 16, 151–156 (1981). https://doi.org/10.1007/BF03003220
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DOI: https://doi.org/10.1007/BF03003220