Motor inhibition, reflection impulsivity, and trait impulsivity in pathological skin picking

Area of Science:

• Psychology
• Psychiatry
• Neuroscience

Background:

• Pathological skin picking (PSP) is frequently classified as an impulse control disorder.
• Understanding the specific facets of impulsivity associated with PSP is crucial for effective intervention.

Purpose of the Study:

• To investigate the relationship between pathological skin picking and various dimensions of impulsivity.
• To determine if specific impulsivity traits predict PSP in a university student population.

Main Methods:

• A study involving 110 university students (55 with PSP, 55 without).
• Participants completed the UPPS Impulsive Behavior Scale and two neurocognitive tasks: the Stop Signal Task and the Information Sampling Task.
• Logistic regression was used to analyze the predictive value of impulsivity scales for PSP.

Main Results:

• The PSP group exhibited significantly higher scores on the negative and positive urgency subscales of the UPPS.
• No significant differences were found between groups on other UPPS subscales or neurocognitive tasks.
• Urgency scales were significant predictors of PSP, even after accounting for negative affect and other impulsivity forms.

Conclusions:

• Pathological skin picking is strongly associated with emotion-based impulsivity, particularly urgency.
• Individuals with PSP do not appear to exhibit impulsivity in other measured domains.
• Findings highlight the importance of addressing emotional regulation deficits in managing PSP.