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The Impact of Intolerance of Uncertainty on Reappraisal and Suppression

The uncertainty of the COVID-19 pandemic highlights the importance of understanding how attitudes towards uncertainty affect well-being. Intolerance of uncertainty is a trait associated with anxiety, worry, and mood disorders. As adaptive emotion regulation supports well-being and mental health, it is possible that intolerance of uncertainty decreases the capacity to use adaptive emotion regulation and increases the use of maladaptive strategies. However, little research exists on the relationship between intolerance of uncertainty and use of cognitive emotion regulation strategies, such as reappraisal and suppression. Study 1 demonstrated that scores on the Intolerance of Uncertainty Scale were associated with greater worry related to the COVID-19 pandemic, decreased capacity to implement reappraisal, and greater self-reported use of suppression in daily life. Study 2 provided a preregistered replication of these findings. These results suggest that intolerance of uncertainty may impact mental health by reducing the capacity and tendency to use adaptive emotion regulation.