Abstract
Treatment of criminalized individuals with addictions poses a number of difficulties. One of these difficulties is linked to the lack of validity – perceived or real – of self report. Lack of validity of self-report data could compromise the treatment process itself as well as the assessment of changes that have occurred in the course of treatment. The present study compares certain self-report data provided by criminalized addicts involved in a treatment program in Quebec (Canada) with other sources of information. The data come from 166 persons following a treatment specifically designed for criminalized persons. Two comparisons were made between participants’ self-report data and other data collected through this study to determine the validity and the relevance of the self-report data. The results suggest that these data are valid and that they may be advantageously used in treatment planning.