Effects of self-concept differentiation on sense of identity: The divided self revisited again

This article describes research on the associations between self-concept structure and sense of personal identity. Particular emphasis was given to the feature of self-concept differentiation (SCD). Notably, it was examined whether the effects of SCD on such aspects of self-experience as sense of having inner contents, sense of uniqueness, sense of one’s own boundaries, sense of coherence, sense of continuity in time, and sense of self-worth depend on individuals’ epistemic motivation, and more specifically their joint need for cognition, reflection, and integrative self-knowledge scores. Cluster analysis revealed three distinct profiles of epistemic motivation: disengaged, engaged and struggling, and engaged and integrating group. Subsequent analysis showed, first, that the three groups differed in SCD and sense of identity, with the epistemically disengaged group having the highest levels of SCD, and the epistemically engaged and integrating group having consistently the strongest sense of identity. Second, and more importantly, it showed that SCD was negatively related to overall sense of identity, and, in particular, senses of having inner contents, coherence and continuity in time, but only among individuals in the epistemically engaged and struggling group