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Title page for ETD etd-08042017-144636


Type of Document Dissertation
Author Roeder, Kathryn Mary
URN etd-08042017-144636
Title Prospective Relations between Peer Victimization and Suicidal Ideation: An Examination of Cognitive Mediators
Degree PhD
Department Psychology
Advisory Committee
Advisor Name Title
David A. Cole Committee Chair
Bahr Weiss Committee Member
Bruce E. Compas Committee Member
Gordon D. Logan Committee Member
Keywords
  • cognitive vulnerability
  • suicide
  • cyberbullying
  • bullying
Date of Defense 2017-05-16
Availability restrictsix
Abstract
The experience of peer victimization predicts future suicidal thoughts and behaviors in adolescents and adults; however, little is known about intermediary cognitive processes that underlie this relation. The present study tested whether cognitive risk factors for suicidality as proposed by Beck (i.e., hopelessness) and Joiner (i.e., perceived burdensomeness and thwarted belongingness) mediate the longitudinal relation between peer victimization and suicidal ideation (Beck, 1974; Joiner, 2005). Self-reports of peer victimization (PV), hopelessness, perceived burdensomeness (PB), thwarted belongingness (TB), and suicidal ideation (SI) were obtained from 192 high school students and 142 undergraduates in a two-wave longitudinal study. Analyses were conducted with a half-longitudinal design, and three key results emerged. First, PV longitudinally predicted perceived burdensomeness, but not hopelessness or thwarted belongingness, in both samples. Second, hopelessness, PB, and TB each predicted future suicidal ideation, but when all three variables were included in a single model, none emerged as a unique predictor of SI. Third, contrary to Joiner’s model, the PBxTB interaction did not predict future suicidal ideation. These results support perceived burdensomeness as a mediator between peer victimization and suicidal ideation, and they provide future directions for research on Beck’s and Joiner’s models of suicidal ideation.
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