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Individual Differences in Auditory, Pain, and Motor Stimulation

The Case of Augmenting/Reducing

Published Online:https://doi.org/10.1027/1614-0001.28.3.165

Abstract. Augmenting/reducing is a personality dimension related to the processing of sensory stimuli. Augmenters are assumed to augment the impact of stimuli leading to stimulation-avoidant behavior and lower pain tolerance. Reducers are assumed to attenuate sensory stimuli leading to stimulation-seeking behavior and higher pain tolerance. Augmenting/reducing can be assessed by the method of evoked potentials or - as in this study - by questionnaire. Two studies were conducted to examine associations between augmenting/reducing as assessed by questionnaire and stimulus intensity modulation. Study 1 found reducers (n = 24, 12 females) to more frequently consume psychoactive substances and to turn music on louder than augmenters (n = 25, 12 females) even after controlling for individual hearing ability. In Study 2, reducers (n = 19, 10 females) were more pain tolerant than augmenters (n = 18, 9 females) and this difference increased with increasing stimulation time. Moreover, reducers were faster than augmenters in a rapid tapping task but there was no difference in a lower-stimulation tracking task. The results suggest that differences between augmenters and reducers are most reliable when the stimulation potential is high. The clinical relevance of this construct is discussed.

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