ISSN 2043-8087
Journal of Experimental Psychopathology
 Volume 5, Issue 3, 351-362, 2014
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Testing the Cognitive Catalyst Model with Idiographic Content: Rumination Moderates the Association between Self-Discrepancies and Depressive Symptoms

Authors
  Chrystal Vergara-Lopez - University at Buffalo
  Yoonhee Kyung - University at Buffalo
  Angela Detschner - University at Buffalo
  John Roberts - University at Buffalo

Volume 5, Issue 3, 2014, Pages 351-362
DOI: http://dx.doi.org/10.5127/jep.038313

Abstract
Depressive rumination, which involves repetitive thinking directed at one's depressive symptoms and the perceived causes and consequences of those symptoms, plays an important role in the onset and maintenance of depression. Recently, Ciesla, and Roberts (2002, 2007; Ciesla, Felton, & Roberts, 2011) proposed the cognitive catalyst model of depression, which posits that rumination intensifies the impact of already existing negative cognitions. Previous studies examining rumination as a moderator of cognitive content have used nomothetic conceptualizations of cognitive content. The current research replicated and extended these past studies using an idiographic conceptualization of negative cognitive content, specifically self-discrepancy theory (SDT). SDT suggests that idiographic self-guides serve to direct behavior and govern self-regulation (Higgins, 1987). Two studies based on college student samples (N = 102 and N = 107) tested the interaction between rumination and self- discrepancies in the prediction of depressive symptoms. In line with the cognitive catalyst model, Study 1 found that rumination moderated the association between actual:ideal self- discrepancies and depressive symptoms, such that self-discrepancies predicted depression more strongly among high compared to low ruminators. Study 2 found that the interaction between rumination and actual:ideal self-discrepancies was specific to predicting dysphoric mood and insomnia versus other dimensions of depressive symptoms, such as lassitude, appetite change and suicidality, and that these effects were limited to males. Results from the two studies provide further support for the cognitive catalyst model by demonstrating that rumination amplifies the association between self-discrepancies and depression and suggests that these effects may be specific to dysphoric mood and insomnia (at least for males) as opposed to other forms of depressive symptomatology.

Table of Contents
Introduction
Study 1
 Participants
 Measures
  Depression.
  Rumination.
  Self-Discrepancies.
 Procedure
Data Analytic Plan
Results
Study 1 Conclusions
Study 2
Method
 Measures
  Depression and Anxiety.
  Rumination.
  Self-discrepancies.
Results
Study 2 Conclusions
General Discussion
References

Correspondence to
John Roberts, Department of Psychology, Park Hall, University at Buffalo, The State University of New York, Buffalo, New York, 14260.

Keywords
rumination; repetitive thought; cognitive vulnerability; depression; self-discrepancies; cognitive catalyst model

Dates
Received 27 Aug 2013; Revised 10 Dec 2013; Accepted 17 Jan 2014; In Press 21 Nov 2014







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