Abstract
Worry is a common symptom in various psychiatric problems and the key symptom of generalised anxiety disorder (GAD). The Penn State Worry Questionnaire (PSWQ) is the most widely used self-report scale for measuring worry. The present study provides normative data for the Dutch version of the PSWQ for a large community sample and a clinically referred sample of patients with GAD. Norms are not only provided for the original 16-item version, but also for an abbreviated 11-item version, which only consists of the positively worded items and has been shown to be a promising alternative to the full-length version. The percentile scores obtained for the community sample and the clinical GAD sample did not show much overlap, and this appeared true for the full-length as well as the abbreviated version of the PSWQ. These normative data seem suitable for differentiating between normal and abnormal manifestations of worrying and for evaluating the efficacy of treatments for GAD. (Netherlands Journal of Psychology, 65, 69-75.)
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American Psychiatric Association (2000). Diagnostic and Statistical Manual of Mental Disorders (4th ed. Text Revision). Washington, DC: American Psychiatric Association.
Beck, J. G., Stanley, M. A., & Zebb, B. J. (1995). Psychometric properties of the Penn State Worry Questionnaire in older adults. Journal of Clinical Geropsychology, 1, 33-42.
Behar, E., Alcaine, O., Zuellig, A. R., & Borkovec, T. D. (2003). Screening for generalized anxiety disorder using the Penn State Worry Questionnaire: A receiver operating characteristic analysis. Journal of Behavior Therapy and Experimental Psychiatry, 34, 25-43.
Brown, T.A. (2003). Confirmatory factor analysis of the Penn State Worry Questionnaire: Multiple factors or method effects? Behaviour Research and Therapy, 41, 1411-1426.
Brown, T. A., Antony, M. M., & Barlow, D. H. (1992). Psychometric properties of the Penn State Worry Questionnaire in a clinical anxiety disorders sample. Behaviour Research and Therapy, 30, 33-37.
First, M. B., Spitzer, R. L., Gibbon, M., & Williams, J. B. (1994). Structured Clinical Interview for DSM-IV Axis-I disorders, research version, patient edition (SCID-I/P). New York: Biometrics Research Department, New York State Psychiatric Interview.
Fresco, D. M., Heimberg, R. G., Mennin, D. S., & Turk, C. L. (2002). Confirmatory analysis of the Penn State Worry Questionnaire. Behaviour Research and Therapy, 40, 313-323.
Fresco, D. M., Mennin, D. S., Heimberg, R. G., & Turk, C. L. (2003). Using the Penn State Worry Questionnaire to identify individuals with generalized anxiety disorder: A receiver operating characteristic analysis. Journal of Behavior Therapy and Experimental Psychiatry, 34, 283-291.
Gillis, M. M., Haaga, D. A. F., & Ford, G. T. (1995). Normative values for the Beck Anxiety Inventory, Fear Questionnaire, Penn State Worry Questionnaire and Social Phobia and Anxiety Inventory. Psychological Assessment, 7, 450-455.
Harvey, A., Watkins, E., Mansell, W., & Shafran, R. (2004). Cognitive behavioural processes across psychological disorders: A transdiagnostic approach to research and treatment. Oxford: Oxford University Press.
Hazlett-Stevens, H., Ullman, J. B., & Craske, M. G. (2004). Factor structure of the Penn State Worry Questionnaire: Examination of a method factor. Assessment, 11, 361-370.
Jacobson, N. S., & Truax, P. (1991). Clinical significance: A statistical approach to defining meaningful change in psychotherapy research. Journal of Consulting and Clinical Psychology, 59, 12-19.
Kendall, P. C., & Grove, W. M. (1988). Normative comparisons in therapy outcome. Behavioral Assessment, 10, 147-158.
Kendall, P. C., & Sheldrick, R. C. (2000). Normative data for normative comparisons. Journal of Consulting and Clinical Psychology, 68, 767-773.
Kerkhof, A., Hermans, D., Figee, A., Laeremans, I., Pieters, G., & Aardema, A. (2000). De Penn State Worry Questionnaire en de Worry Domains Questionnaire: Eerste resultaten bij Nederlandse en Vlaamse klinische en poliklinische populaties (The Penn State Worry Questionnaire and the Worry Domains Questionnaire: First results in Dutch and Flemish clinical populations). Gedragstherapie, 33, 135-146.
Marsh, H. W. (1996). Positive and negative global self-esteem: A substantively meaningful distinction or artifactors? Journal of Personality and Social Psychology, 70, 810-819.
Meyer, T. J., Miller, M. L., Metzger, R. L., & Borkovec, T. D. (1990). Development and validation of the Penn State Worry Questionnaire. Behaviour Research and Therapy, 28, 487-495.
Sabshin, M. (1989). Normality and the boundaries of psychopathology. Journal of Personality Disorders, 3, 259-273.
Startup, H. M., & Erickson, T. M. (2006). The Penn State Worry Questionnaire (PSWQ). In: G. C. L. Davey, & A. Wells (Eds.), Worry and its psychological disorders: Theory, assessment and treatment (pp. 265-283). Chichester, England: Wiley.
Stöber, J. (1995). Worrying: A comparison of three questionnaires concerning everyday worries. Zeitschrift für Differentielle und Diagnostische Psychologie, 16, 50-63.
Van der Heiden, C., Muris, P., Bos, A. E. R., & van der Molen, H. T. (submitted for publication). Factor structure of the Dutch version of the PSWQ in a community sample and in a sample of patients with generalized anxiety disorder.
Van Rijsoort, S., Vervaeke, G., & Emmelkamp, P. (1997). De Penn State Worry Questionnaire en de Worry Domains Questionnaire: Eerste resultaten bij een normale Nederlandse populatie (The Penn State Worry Questionnaire and the Worry Domains Questionnaire: First results in a normal Dutch population). Gedragstherapie, 30, 121-128
Van Rijsoort, S., Emmelkamp, P., & Vervaeke, G. (1999). The Penn State Worry Questionnaire and the Worry Domains Questionnaire: Structure, reliability and validity. Clinical Psychology and Psychotherapy, 6, 297-307.
Woods, C. M. (2006). Careless responding to reverse-worded items: Implications for confirmatory factor analysis. Journal of Psychopathology and Behavioral Assessment, 28, 189-194.
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Outpatient Treatment Centre PsyQ, Rotterdam and Institute of Psychology, Erasmus University Rotterdam
Institute of Psychology, Erasmus University Rotterdam
Correspondence to Colin van der Heiden, PsyQ, Van Vollenhovenstraat 3 (2nd floor), 3016 BE Rotterdam, the Netherlands, Submitted 11 February 2009: revision accepted 29 March 2009.
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van der Heiden, C., Muris, P., Bos, A.E.R. et al. Normative data for the Dutch version of the Penn State Worry Questionnaire. NEJP 65, 69–75 (2009). https://doi.org/10.1007/BF03080129
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DOI: https://doi.org/10.1007/BF03080129