科研之友
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摘要
Objective: Bipolar disorder has been associated with elevated impulsivity - a complex construct subsuming multiple facets. We aimed to compare specific facets of impulsivity in bipolar disorder, including those related to key psychological correlates of the illness: reward sensitivity and strong emotion. Method: Ninety-one individuals diagnosed with bipolar I disorder (inter-episode period) and 80 controls completed several well-validated impulsivity measures, including those relevant to reward (Fun-seeking subscale of the Behavioral Activation System scale) and emotion (Positive Urgency and Negative Urgency scales). Results: Bipolar participants reported higher impulsivity scores than did controls on all of the impulsivity measures, except the Fun-seeking subscale of the Behavioral Activation System scale. Positive Urgency a measure assessing the tendency to act impulsively when experiencing strong positive emotion - yielded the largest group differences: F (1,170) = 78.69, P < 0.001, partial eta(2) = 0.316. Positive Urgency was also associated with poorer psychosocial functioning in the bipolar group: Delta R-2 = 0.24, b = - 0.45,P < 0.001. Conclusion: Individuals with bipolar I disorder appear to be at particular risk of behaving impulsively when experiencing strong positive emotions. Findings provide an important first step toward developing a more refined understanding of impulsivity in bipolar disorder with the potential to inform targeted interventions.
- 出版日期2014-2
