Date on Master's Thesis/Doctoral Dissertation

8-2024

Document Type

Doctoral Dissertation

Degree Name

Ph. D.

Department

Counseling and Human Development

Degree Program

Counseling and Personnel Services, PhD

Committee Chair

Pössel, Patrick

Committee Member

Mitchell, Amanda

Committee Member

Hopkins, Katy

Committee Member

Martin, Nina

Author's Keywords

discrimination; depression; adolescents; cognitive triad; negative cognitive triad; TNF-⍺

Abstract

This study is based on Beck's cognitive stress-vulnerability model of depression and previous research on (a) the increased risk for severe illnesses associated with TNF-⍺ (i.e., an inflammatory cytokine), (b) the effect of perceived everyday discrimination (PED) on depressive symptoms and TNF-⍺, (c) the association between depressive symptoms and TNF-⍺, (d) and findings that the negative cognitive triad (i.e., negative views of the self, world, and future) serves as a partial mediator between PED and depressive symptoms. The purpose of this study is to integrate Beck’s model and these different research lines by inspecting the associations between the stressor PED and TNF-⍺ through the cognitive vulnerability of the negative cognitive triad and depressive symptoms in adolescents. This cross-sectional study utilized a sample of 99 adolescents (36.4% female) aged 13 to 16 (M = 14.10, SD = 0.52) who identified as White (47.5%), Black (41.4%), Mixed Race (7.1%), Latino (2%), and other (2%). Data were analyzed using PROCESS and AMOS to compute regressions and direct, indirect, and total effects of PED, negative cognitive triad aspects, and depressive symptoms on TNF-⍺. Findings showed that negative views of the self and world mediated the relation between PED and depressive symptoms and that negative views of the self and future mediated the relation between PED and TNF-⍺. In sum, my findings demonstrate that Beck’s theory can be expanded to include physical health outcomes, which provides new directions for clinicians wishing to target mental and physical health outcomes simultaneously through restructuring adolescents’ negative view of the self.

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