Reactions to Uncertainty: Exploring the Interplay Between Intolerance of Uncertainty, Attachment Styles, and Psychological Symptoms

This study investigated the interplay between Intolerance of Uncertainty (IU), attachment styles, and mental health, using network analysis on a community sample of 1121 individuals (450 men, 654 women, 17 unreported gender), aged 20-76 years (M = 36.8; SD = 12.4). Participants completed various instruments, including the Intolerance of Uncertainty Inventory, Experiences in Close Relationships-Revised, Attachment Style Questionnaire, State Adult Attachment Measure, and the 27-item Symptoms Checklist. Findings revealed a complex network with a central cluster of maladaptive IU beliefs. Attachment styles significantly shaped responses to uncertainty, especially doubt, threat overestimation, and reassurance seeking, while avoidant attachment linked to uncertainty control and avoidance of uncertainty, symptoms of mistrust and social phobia. Secure attachment offered a protective indirect influence. Central nodes in the network, like Worry, Reassurance Seeking, and Doubt, connect closely to core IU beliefs and depressive symptoms, suggesting them as potential intervention targets. Addressing these maladaptive reactions to uncertainty, particularly in individuals with insecure attachment, could mitigate the co-occurrence of IU beliefs and attachment styles, enhancing coping mechanisms in daily life. This research enriches the understanding of the dynamics between attachment styles, IU, and mental health.