AbstractObjectiveBoredom proneness is associated with various problematic behaviors and mental health issues. Despite its wide‐ranging implication, boredom proneness as a trait‐like construct suffers from conceptual ambiguity and measurement issues. We examined whether boredom proneness represents individual differences in (a) the frequency of getting bored, (b) the intensity of boredom, and/or (c) a holistic perception of life being boring (perceived life boredom).MethodAcross Study 1 (U.S. Sample, N = 495; HK Sample, N = 231) and Study 2 (N = 608), we tested the construct validity of boredom proneness by estimating its association with measures of the three possible characterizations (convergent validity), and examined to what extent associations between boredom proneness and variables relevant to well‐being (e.g., life satisfaction, psychological distress) could be reproduced with the three potential characterizations (concurrent validity).ResultsResults suggest that each of the three characterizations represents some aspect of boredom proneness, and they generally reproduced boredom proneness' associations with other variables. Among them, perceived life boredom had the strongest convergent and concurrent validity.ConclusionOur findings provide novel insights into the characterization of boredom proneness and its hitherto poorly understood relationship with psychological well‐being.