Differential involvement of trait impulsivity, fluid intelligence, and executive function in creativity among euthymic patients with bipolar disorder.

Abstract

Background: While anecdotal evidence suggests a link between bipolar disorder and heightened creativity, empirical studies are scarce, and the underlying cognitive mechanisms remain unclear. This study aimed to explore the association between trait impulsivity, executive function, fluid intelligence, and creativity among euthymic patients with bipolar disorder.

Methods: Euthymic outpatients with bipolar disorder and age- and sex-matched healthy controls were enrolled in this cross-sectional study. Creativity was assessed using the Abbreviated Torrance Test for Adults and the Chinese Word Remote Associates Test, which examined divergent thinking and convergent thinking, respectively. Trait impulsivity was measured using the Barratt Impulsiveness Scale, while cognitive flexibility was evaluated using the Wisconsin Card Sorting Test. Fluid intelligence was assessed using Raven's Progressive Matrices. General linear models were used to assess the associations between these cognitive measures.

Results: Fifty-seven euthymic patients with bipolar disorder and fifty-six controls were recruited. Euthymic patients with bipolar disorder exhibited comparable overall creativity to controls but underperformed in convergent thinking. General linear models confirmed a negative association between trait impulsivity and creativity, primarily observed in patients with bipolar disorder. Cognitive flexibility positively correlated with creativity among patients with bipolar disorder, independent of fluid intelligence.

Conclusion: Our study showed that euthymic patients with bipolar disorder do not have heightened creativity. The findings underscore the importance of considering trait impulsivity and cognitive factors in understanding creativity in bipolar disorder.

Lay summary: Bipolar disorder (BD) is often linked to creativity, but scientific evidence on this connection is limited. Some individuals with BD may have creative strengths, while others struggle with cognitive challenges. This study explored how impulsivity, cognitive flexibility, and fluid intelligence affect creativity in euthymic patients with BD. Creativity was assessed by measuring divergent thinking (generating many different ideas) and convergent thinking (problem solving ability). The results showed that patients with BD do not have heightened creativity compared to healthy individuals. Importantly, higher impulsivity was linked to lower creativity, while better cognitive flexibility was associated with greater creativity in BD. The findings suggest that while BD does not enhance creativity, certain cognitive traits-such as lower impulsivity and stronger cognitive flexibility-may support creative thinking.