Psychometric properties of the Norwegian version of the Dysfunctional Attitude Scale (Form A).

The present study reports the reliability and validity of the Norwegian version of the Dysfunctional Attitude Scale in non-clinical and clinical populations. The participants were 344 young male military recruits, 41 healthy controls and 142 psychiatric outpatients. All the participants completed the Dysfunctional Attitude Scale, the Beck Depression Inventory and the Automatic Thoughts Questionnaire. The analysis of the Dysfunctional Attitude Scale revealed a Cronbach's alpha of 0.85, indicating satisfactory reliability. Evidence for the construct validity was obtained by the correlation between the Dysfunctional Attitude Scale and the Beck Depression Inventory (r = 0.47) and the Dysfunctional Attitude Scale and the Automatic Thoughts Questionnaire (r = 0.47). Finally, the Dysfunctional Attitude Scale significantly discriminated between clinically depressed, non-depressed psychiatric patients and healthy controls. The results showed that the Norwegian version of the Dysfunctional Attitude Scale possess satisfactory psychometric properties suggesting that this instrument is appropriate for use as a cognitive measure in a Norwegian cultural context.