Hyland, Philip, Shevlin, Mark, Adamson, Gary and Boduszek, Daniel (2014) The Organisation of Irrational Beliefs in Posttraumatic Stress Symptomology: Testing the Predictions of REBT Theory using Structural Equation Modelling. Journal of Clinical Psychology, 70 (1). pp. 48-59. ISSN 1097-4679

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Objective: This study directly tests a central prediction of Rational Emotive Behaviour
Therapy (REBT) that has received little empirical attention regarding the core and intermediate beliefs in the development of posttraumatic stress symptoms.
Method: A theoretically consistent REBT model of posttraumatic stress disorder (PTSD) was examined
using structural equation modelling techniques among a sample of 313 trauma-exposed military and law enforcement personnel.
Results: The REBT model of PTSD provided a good fit of the data (χ2 = 599.173, df = 356, p < .001; RMSEA = .05 (CI = .04 - .05); SRMR = .04; CFI = .95; TLI = .95). Results demonstrated that Demandingness beliefs indirectly impacted the various symptom groups of PTSD through a set of secondary irrational beliefs that include Catastrophizing, Low Frustration Tolerance, and Depreciation beliefs.
Conclusions: Results were consistent with the predictions of REBT theory and provides strong empirical support that the cognitive variables described by REBT theory are critical cognitive constructs in the prediction of PTSD symptomology.

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