Abstract
Emotion-related impulsivity is an important behavioural phenotype in clinical psychology and public health. Here, we test the hypothesis that emotion-related impulsivity moderates the effects of arousal on cognition using pharmacological manipulation. Participants completed a measure of emotion-related impulsivity, four cognitive tasks tapping onto different facets of impulsive behaviours, and a blinded arousal manipulation using yohimbine hydrochloride, which acts on noradrenergic receptors. Our findings suggest that emotion-related impulsivity moderates the role of arousal on impulsive performance on the Information Sampling Task. As expected, more severe emotion-related impulsivity was related to more impulsive decisions in the yohimbine but not in the placebo group. Results provide some of the first experimental evidence that emotion-related impulsivity is related to differential behavioural responses in the face of high arousal. Despite this preliminary support, we discuss findings for one task that did not fit hypotheses, and provide suggestions for replication and extension.
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