Stress and worry: examining intolerance of uncertainty's moderating effect

Intolerance of uncertainty (IU), or the way an individual perceives, interprets, and reacts to uncertainty in life, has been frequently investigated in relation to anxiety and worry. While a substantial body of research suggests that individual differences in IU foster stress and anxiety, IU's involvement as a potential moderator in the relation between stressful events and worry has only recently been investigated. Therefore, the present study examined the moderating effect of IU on the relation between daily hassles and worry as well as major life events and worry in a sample of 1092 young adults. Results revealed that IU showed a significant moderation effect in the relation between daily stress and worry. More specifically, when the two factors were examined individually only inhibitory IU served as a moderator between daily stress and worry. While major life events significantly predicted worry, no moderation effect was found for this relation. These findings highlight the need to better understand the mechanisms through which IU impacts worry and contributes to anxiety.