Validation of a questionnaire on drug addicts’ motivation for treatment
The aim of this study is to construct and validate a French-language questionnaire based on the theory of self-determination (Deci and Ryan, 1985). To do so, 352 people were recruited in a public readaptation center for alcoholic and drug addicted persons. Globally, the psychometric properties of the Questionnaire de motivation au traitement des toxicomanies (QMTT) are quite satisfactory. In addition, the studied population seems to show a particular motivational profile. The clinical implications of such a profile are discussed.