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Perseverative Thinking Questionnaire: Confirmatory factor analysis with two different samples

Published online by Cambridge University Press:  23 March 2020

J. Azevedo ,
A.T. Pereira ,
A.P. Amaral ,
V. Nogueira ,
M.J. Soares ,
D. Mota  and
A. Macedo
J. Azevedo
Affiliation:
University of Coimbra, Department of Psychological Medicine, Coimbra, Portugal
A.T. Pereira
Affiliation:
Faculty of Medicine, University of Coimbra, Department of Psychological Medicine, Coimbra, Portugal
A.P. Amaral
Affiliation:
Faculty of Medicine, University of Coimbra, Department of Psychological Medicine, Coimbra, Portugal Institute Polytechnic of Coimbra, ESTESC, Coimbra Health School, Coimbra, Portugal
V. Nogueira
Affiliation:
Faculty of Medicine, University of Coimbra, Department of Psychological Medicine, Coimbra, Portugal
M.J. Soares
Affiliation:
Faculty of Medicine, University of Coimbra, Department of Psychological Medicine, Coimbra, Portugal
D. Mota
Affiliation:
Faculty of Medicine, University of Coimbra, Department of Psychological Medicine, Coimbra, Portugal Coimbra Hospital and University Centre, Psychiatric Department, Coimbra, Portugal
A. Macedo
Affiliation:
Faculty of Medicine, University of Coimbra, Department of Psychological Medicine, Coimbra, Portugal Coimbra Hospital and University Centre, Psychiatric Department, Coimbra, Portugal

Abstract

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Introduction

Perseverative Negative Thinking (PNT) is a transdiagnostic cognitive process [1] characterized by repetitiveness, intrusiveness and difficulties to disengage (Ehring, 2011). The Perseverative Thinking Questionnaire (PTQ-15; [2]) is a self-reported instrument, developed to evaluate these characteristics. The Portuguese version assess two meaningful dimensions – Repetitive thoughts (RT); and Cognitive interference and unproductiveness (CIU) [3].

Aim

To confirm the bi-dimensional structure of the PTQ-15 using Confirmatory Factor Analysis, in two distinct samples.

Method

A sample composed of 256 students (Mean age = 20.58 ± 1.870; 78.1% girls) and a sample composed of 480 adults from the community (parents of the students; mean age = 50.84 ± 5.310; 53.1% women) filled the PTQ-15. We used software AMOS.

Results

The second-order model of PTQ-15 with two dimensions presented good fit, in both students (CMIN = 2.449; RMSEA = 0.075; CFI = 0.958, TLI = 0.949, PGFI = 0.776; P < 0.001) and their parents (CMIN = 3.46; RMSEA = 0.072, CFI = 0.955, TLI = 0.942, PGFI = 0.632; P < 0.001). Internal consistency of the total scale, measured though Cronbach's alpha was α = 0.95/0.94; both factors presented good/excellent reliability: repetitive thoughts (a = 0.93/0.92); cognitive interference and unproductiveness (a = 0.88/0.92).

Conclusion

Taken together, both CFAs provided additional evidence that PTQ-15 is an adequate measure for perseverative thinking.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Type
e-Poster Walk: Quality management; rehabilitation and psychoeducation and research methodology
Information
European Psychiatry , Volume 41 , Issue S1: Abstract of the 25th European Congress of Psychiatry , April 2017 , pp. S377 - S378
Copyright
Copyright © European Psychiatric Association 2017

References

Ehring, T.Watkins, E.R.Repetitive negative thinking as a transdiagnostic process. Int J Cogn Ther 2008;1(3):19220510.1521/ijct.2008.1.3.192CrossRefGoogle Scholar
Ehring, T., et al.The Perseverative Thinking Questionnaire (PTQ): validation of a content-independent measure of repetitive negative thinking. J Behav Ther Exp Psychiatry 2011;42(2):22523210.1016/j.jbtep.2010.12.003CrossRefGoogle ScholarPubMed
Chaves, B., et al. Preservative thinking questionnaire: validation of the Portuguese version. Congresso Mundial de Comportamentos de Saúde infanto-juvenil Maio, Viseu, Portugal 2013Google Scholar
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