Emotion Review, Volume 14, Issue 1, Page 66-83, January 2022. To better define the boundaries of conceptually overlapping constructs of intrapersonal emotion knowledge, we examined meta-analytic correlations among five intrapersonal EK-related constructs and attention to emotion. Affect labelling, alexithymia, and emotional clarity were strongly associated, and they were moderately associated with attention to emotion. Alexithymia and emotional awareness were weakly associated, and emotion differentiation was unrelated with emotional clarity. Sample characteristics and measures moderated some of the associations. Publication bias was (...) not found, except for the alexithymia-emotional awareness association. This study helped to clarify the extent to which similarly defined constructs overlap or are distinct, which can inform our decision to adequately label important constructs and employ corresponding measures. (shrink)