期刊
CLINICAL PSYCHOLOGICAL SCIENCE
卷 1, 期 2, 页码 110-119出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/2167702612474440
关键词
nonsuicidal self-injury; pain offset relief; affect regulation; psychophysiological indices
The majority of people who engage in nonsuicidal self-injury (e.g., cutting) report that affect regulation is their primary motivation for these painful behaviors. Unfortunately, little is known about the mechanisms that regulate affect during nonsuicidal self-injury. In the present study, we examined the role of one potential mechanism known as pain offset relief. In 42 participants (21 self-cutters, 21 controls), we measured psychophysiological indices of positive affect (startle postauricular reactivity) and negative affect (startle eyeblink reactivity) after painful electric shocks. Results provided evidence that pain offset relief is a natural and unique mechanism of affect regulation that generates simultaneous-but independent-positive and negative reinforcement. However, associations between nonsuicidal self-injury frequency and pain offset relief variables were weak and nonsignificant. Contrary to contemporary theories, this suggests that the strong association between prior and future self-injury may not be driven by opponent processes that generate stronger relief (and, thus, stronger reinforcement of self-injury) across episodes.
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