ISSN 2043-8087
Journal of Experimental Psychopathology
 Volume 5, Issue 3, 382-398, 2014
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Trait Repetitive Negative Thinking: A Brief Transdiagnostic Assessment

Authors
  Peter McEvoy - Centre for Clinical Interventions, Perth, Australia
  Michel Thibodeau - Department of Psychology, University of Regina, Regina, Saskatchewan, Canada
  Gordon Asmundson - Department of Psychology, University of Regina, Regina, Saskatchewan, Canada

Volume 5, Issue 3, 2014, Pages 382-398
DOI: http://dx.doi.org/10.5127/jep.037813

Abstract
Repetitive negative thinking (RNT) is an established transdiagnostic process associated with multiple emotional disorders. Brief transdiagnostic measures of RNT uncontaminated with diagnosis-specific symptoms, terminology, and instructions are required for (a) research investigating the process of RNT and (b) clinical practice to guide case formulations, treatment plans, and to assess change. The aim of this study was to examine the psychometric properties of a 10-item trait version of the Repetitive Thinking Questionnaire (RTQ-10) in undergraduate (N = 386) and clinical (N = 400) samples. The undergraduate sample completed the RTQ-10, and the clinical sample completed the RTQ-10 as well as measures of worry, rumination, anxiety- and depression-related cognitions, and positive and negative affect. Results demonstrated that the RTQ-10 has a unitary structure, high internal reliability, distinguishes between clinical and non-clinical cases, assesses RNT similarly in men and in women, and accurately assesses RNT along its full continuum. RTQ-10 scores were positively associated with worry and rumination, anxiety and depression symptoms and cognitions, and with the higher order vulnerability factor of negative affect, adding to its transdiagnostic credentials. The RTQ-10 was negatively but weakly associated with positive affect, providing some divergent validity. The RTQ-10 appears to be a brief and clinically useful transdiagnostic measure of RNT.

Table of Contents
Introduction
Methods
 Participants
  Clinical sample.
 Measures
  Repetitive Thinking Questionnaire-10 (RTQ-10, McEvoy et al., 2010).
  Ruminative Response Scale (RRS, Nolen-Hoeksema & Morrow, 1991).
  Penn State Worry Questionnaire (PSWQ, Meyer et al., 1990).
  Beck Depression Inventory-II (BDI-II, Beck, Steer, & Brown, 1996).
  Beck Anxiety Inventory (BAI, Beck, Epstein, Brown, & Steer, 1988).
  Cognitions Check List (CCL, Beck, Brown, Steer, Eidelson, & Riskind, 1987).
  Positive And Negative Affect Scale (PANAS, Watson, Clarke, & Tellegen, 1998).
 Procedure
  Undergraduate sample.
  Clinical sample.
 Analyses
Results
 Exploratory Factor Analysis, Descriptive Statistics, and Internal Reliability
 Receiving Operating Characteristics and Gender-Based Item Functioning
 Item Characteristic Curves
 Convergent and Divergent Validity
Discussion
Acknowledgements
References
Appendix: RTQ-10 (trait)

Correspondence to
Peter M. McEvoy, Ph.D., Centre for Clinical Interventions, 223 James Street, Northbridge, Perth, Western Australia, 6003, Australia.

Keywords
Repetitive thinking; transdiagnostic; trait; questionnaire; worry; rumination

Dates
Received 22 Aug 2013; Revised 9 Nov 2013; Accepted 10 Dec 2013; In Press 21 Nov 2014







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