(Just Thinking of) Uncertainty Increases Intolerance of Uncertainty

Intolerance of uncertainty is a far-reaching - yet not widely examined - construct with clinical and nonclinical associations. The current study implemented a brief reflection on uncertainty hypothesized to increase tolerance of uncertainty. The group who engaged in the reflection (n = 50) was compared to an active control condition (n = 50). Results demonstrated the opposite of the primary hypothesis: simply reflecting on uncertainty significantly increased intolerance of uncertainty (vs. tolerance of uncertainty). Results also demonstrated that those higher in mindfulness were higher in tolerance of uncertainty, with the "nonreactivity" factor of mindfulness contributing unique variance. These findings suggest multiple factors that might contribute to both tolerance and intolerance of uncertainty. This study indicates that investigations of interventions that include training in mindfulness and its component of nonreactivity might be particularly warranted.