In hoarding disorder, features including attentional difficulties and emotion dysregulation can contribute to the core symptoms of clutter, difficulties discarding, and excessive acquisition. Boredom is a negative feeling state that shares a high level of overlap with associated features of hoarding, including inattention, depressive symptoms, and impulsivity, and has been implicated in compulsive buying behaviors. Boredom may be a particularly relevant factor in compulsive hoarding; however, this relationship remains significantly under-researched. The present studies aimed to thoroughly investigate associations between boredom and hoarding severity using diverse methodologies. Study 1 (N = 253) replicated, in an online community sample, previously reported positive associations between hoarding severity and recent state boredom while statistically controlling for potentially confounding variables (e.g., depression, indecisiveness), and extended these findings to include boredom proneness. In Study 2, individuals with elevated hoarding symptoms (n = 56) and a history of hoarding problems (n = 43) reported higher levels of recent state and trait boredom than controls (n = 61). Additionally, boredom was associated with performance on simulated acquiring and discarding tasks. Finally, Studies 3a (N = 144) and 3b (N = 146) attempted the first experimental tests of induced boredom on acquiring and discarding behaviors. Although results were mixed and preclude causal conclusions, exploratory analyses revealed that individuals reporting higher in-the-moment boredom took more (p = .008) and discarded fewer (p = .021) items on the simulated tasks. Overall, results suggest that boredom may have crucial implications in hoarding symptom severity.
