Date of Award

2026

Document Type

Dissertation

Degree Name

Doctor of Psychology (PsyD)

Department

Psychology

First Advisor

Dr. Eva Feindler

Second Advisor

Dr. Traci Maynigo

Third Advisor

Dr. Ki Eun Shin

Abstract

This study examined whether family structure (blended vs. non-blended) influenced changes in emotional intelligence (EI) among adults, while controlling for baseline EI and childhood trauma. Participants were 420 adults (292 from non-blended families and 128 from blended families) who completed pre- and post-treatment assessments of emotional intelligence using the Assessing Emotions Scale and completed the Childhood Trauma Questionnaire (CTQ) at baseline. Multicollinearity diagnostics revealed some overlap between emotional and physical abuse on the CTQ, but no severe violations. The overall model was significant, F (7, 412) = 16.95, p < .001, R2 = .224, explaining 22% of the variance in EI change. Baseline EI significantly predicted change (p < .001), while CTQ subscales were non-significant. Family structure had a small but statistically significant effect on EI change, F (1, 412) = 4.79, p = .029, partial η2 = .011, with adults from blended families showing slightly greater increases in EI than those from non-blended families. Findings suggest that while family context may shape emotional growth, baseline emotional functioning remains the strongest predictor of change. Future studies should recruit larger samples to enhance power and explore the mechanisms underlying these associations.

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