Perseverative Thinking Questionnaire: Confirmatory factor analysis with two different samples

• DOI: 10.1016/j.eurpsy.2017.02.401
• Publication Date: 2017-06-30T16:49:06Z
• Authors: J. Azevedo; A.T. Pereira; A.P. Amaral; V. Nogueira; M.J. Soares; D. Mota; A. Macedo
• Keywords: 4. Education; 05 social sciences; 0501 psychology and cognitive sciences

IntroductionPerseverative 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].AimTo confirm the bi-dimensional structure of the PTQ-15 using Confirmatory Factor Analysis, in two distinct samples.MethodA 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.ResultsThe 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).ConclusionTaken together, both CFAs provided additional evidence that PTQ-15 is an adequate measure for perseverative thinking.Disclosure of interestThe authors have not supplied their declaration of competing interest.