[The University of Rhode Island Change Assessment Scale (URICA)].

The present paper describes a German version of the University of Rhode Island Change Assessment Scale (URICA) called Fragebogen zu Erfassung der Veränderungsbereitschaft (FEVER). The URICA is a questionnaire designed to measure the stages of change. This instrument is well suited for complex problem behavior, because it yields scores for each stage of change for each individual instead of classifying individuals into a single stage. It is based on Prochaska's transtheoretical model of change. This model recognizes that most psychological disorders are characterized by repetitive problem behaviors that are resistant to modification, and that people do not make a simple black or white decision to change their behavior, rather it holds that people change their behavior gradually across different stages. The model has been successfully applied in different areas of health care to help preventive and treatment interventions adjust to clients' readiness for change. The FEVER was used and tested in a cross-sectional study of 129 patients with an eating disorder. It turned out to be an instrument that was easily understood by patients and that yielded the factor structure of the original version. The internal consistency of the scales was good or very good. Means and standard deviations of the scales were comparable to those found using the original instrument. In addition, there was evidence for the predictive and concordant validity of the instrument. We conclude that the FEVER is a valid instrument to assess the motivational dimension of therapeutic change of complex problem behavior.