Investigating the dynamics of affect: Psychological mechanisms of affective habituation to pleasurable stimuli

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• 作者：Adam M. Leventhal ; Rodney L. Martin ; Robert W. Seals ; Evelina Tapia and Lynn P. Rehm
• 关键词：Affective habituation ; Affective dynamics ; Reward ; seeking behavior ; Conceptual processes ; Anhedonia
• 刊名：Motivation and Emotion
• 出版年：2007
• 出版时间：June, 2007
• 年：2007
• 卷：31
• 期：2
• 页码：145-157
• 全文大小：328 KB

文摘

Affective habituation (i.e., reductions in stimulus-evoked affective reactions as a result of previous exposure) may serve a functional purpose. However, little is know about the psychological mechanisms underlying this process. To elucidate the characteristics of affective habituation, two experiments that examined affective reactions to repeated exposures of pleasurable stimuli were conducted. Results of these experiments indicated that habituation trajectories are characterized by linear decreases in affect. Results also demonstrated that habituation can be slowed by the introduction of novel stimuli (i.e., “novelty effects”), effects that are dimensional (rather than taxonic) in nature. Experiment 2 demonstrated that habituation is mediated by conceptual rather than perceptual processes. Depressed and anhedonic individuals were not more susceptible to habituation in either experiment. The current findings and previous theorizing suggest that habituation may be an important component of an adaptive affective processing system that promotes effective responses to salient stimuli and prevents compulsive reward-seeking behavior.