Motor Inhibition, Reflection Impulsivity, and Trait Impulsivity in Pathological Skin Picking

Department of Psychology,University of Iceland, 101 Reykjavík,
Behavior therapy (Impact Factor: 3.69). 09/2011; 42(3):521-32. DOI: 10.1016/j.beth.2010.12.002
Source: PubMed


Pathological skin picking (PSP) is often recognized as an impulse control disorder. The current study sought to investigate the relationship between PSP and different forms of impulsivity. University students that met criteria for PSP (n = 55) and university students without history of PSP (n = 55) answered a multidimensional impulsivity questionnaire (the UPPS Impulsive Behavior Scale) and completed 2 neurocognitive tasks that assess impulsivity (the Stop Signal Task and the Information Sampling Task). The PSP group scored significantly higher than the control group on the negative and positive urgency subscales of the UPPS, but the groups did not differ on other subscales or the neurocognitive tasks. Logistic regression demonstrated that the urgency scales added to the prediction of PSP after negative affect and other forms of impulsivity were adjusted for. The results indicate that PSP sufferers are characterized by emotion-based impulsivity and do not appear to be impulsive in other ways.

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Available from: Ívar Snorrason, Jan 07, 2014
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    • "For instance, Glenn and Klonsky (2010) found that college undergraduates with a history of NSSI reported higher levels of negative urgency than those with no history of NSSI. Similarly, Snorrason et al. (2011) found that when controlling for the other impulsivity factors, negative urgency was a significant predictor of pathological skin picking, a possible form of NSSI. However, these studies are limited in that they are cross-sectional and do not examine the interaction with state affect predicted by NSSI models. "
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