Date of Award

2026

Document Type

Thesis

Degree Name

Master of Arts (MA)

Department

Psychology

Committee Chair and Members

Sara Haden, Committee Chair

Elizabeth Kudadjie-Gyamfi, Committee Member

Abstract

Numerous studies have examined the effects of trauma on emotion dysregulation or have focused primarily on childhood trauma. The present study aimed to understand the effects of trauma at different developmental stages: childhood, adolescence, and adulthood. The sample consisted of 201 participants, who were selected from a larger pool of participants who received course credit for completing this study. The results of this study revealed that trauma at all ages significantly and positively affects interpersonal difficulties, through emotion dysregulation as a positive mediator, as hypothesized. However, contrary to hypotheses, childhood trauma did not have a greater effect compared to adolescent trauma and adulthood trauma, as no significant differences were found between the effect sizes of these different developmental stages on interpersonal difficulties. Moreover, this study also explored different trauma types, and the results indicated emotional abuse had the most negative effect on both emotion dysregulation and interpersonal competence compared to other forms, while neglect, on the other hand, had the least effect on interpersonal difficulties.

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