Abstract
Despite great progress in our theoretical and empirical investigations of boredom, a basic issue regarding boredom remains unresolved: it is still unclear whether the construct of boredom is a unitary one or not. By surveying the relevant literature on boredom and arousal, the paper makes a case for the unity of the construct of boredom. It argues, first, that extant empirical findings do not support the heterogeneity of boredom, and, second, that a theoretically motivated and empirically grounded model of boredom (the functional account) supports the view that the construct of boredom is a unitary one.