Contexte. Les infractions à caractère sexuel ont fortement augmenté dans les dernières années et les personnes mineures en sont les principales victimes. Un grand intérêt est accordé aux distorsions cognitives dans le champ de la recherche en délinquance sexuelle. Cependant, très peu d’études se sont intéressées aux dimensions mesurées par l’un des instruments les plus utilisés : l’échelle de cognitions Molest (ÉCM ; Bumby, 1996). Peu d’études se sont également intéressées au lien entre les distorsions cognitives et la carrière criminelle des auteurs d’infractions à caractère sexuel sur personnes mineures (AICSM). Objectif. L’objectif du présent mémoire est d’explorer les dimensions mesurées par l’ÉCM et les comparer aux résultats d’études précédentes. Il est aussi question d’étudier le lien entre les distorsions cognitives mesurées par l’ÉCM et la carrière criminelle des AICSM. Méthodes. L’échantillon est composé de 1232 hommes adultes AICSM étant suivis au Centre d’intervention en délinquance sexuelle (CIDS) de Laval. Les participants ont tous complété l’ÉCM lors de leur suivi au centre. Résultats. Les résultats indiquent que quatre dimensions émergent de l’ÉCM et que certaines distorsions cognitives telles que mesurées par cet instrument sont liées aux différents paramètres de carrière criminelle des individus composant l’échantillon, incluant la récidive violente et sexuelle. / Background. Sexual offenses have increased sharply in recent years and minors are the main victims. There is considerable interest in cognitive distortions in the field of sexual offending research. However, very few studies have focused on the dimensions measured by one of the most widely used instruments: the MOLEST Cognitions Scale (Bumby, 1996). Few studies have also looked at the link between cognitive distortions and the criminal careers of people who have sexually offended against a minor (PSOM). Objective. The objective of the present study is to explore the dimensions measured by the MOLEST scale and compare them with the results of previous studies. It also investigates the relationship between cognitive distortions measured by the MOLEST scale and PSOMs’ criminal careers. Methods. The sample consisted of 1,232 adult men who sexually offended on a minor and were being treated at the Intervention centre in sexual delinquency (ICSD) in Quebec (Canada). All participants completed the MOLEST cognition scale during their treatment at the ICSD. Results. Findings indicate that four dimensions emerge from the MOLEST scale, and that certain cognitive distortions as measured by this instrument are related to the different criminal career parameters of sample, including violent and sexual recidivism.

Criminal career research postulates that offending behaviour develops over time during the course of one’s life. Thus, delinquency is not an isolated incident which occurs at a certain moment in time. This research comprises a mixed-method study of the criminal career of 40 offenders who perpetrated robberies against the banking and CIT industries. Through this research, an exploration is made for possibilities of using criminal career research to develop results which will guide crime prevention policies. The qualitative methodology used for this research included semi-structured interviews in order to collect information on motivations of armed robbers and the various mechanics (i.e. planning, recruitment, group dynamics) of the crime of armed robbery. Through the use of structured questionnaires, biographical data, information on risk factors and figures on the different aspects of a criminal career, such as age of offending onset, offending frequency and seriousness, and career length, were all gathered. The general findings of this research demonstrate that offending onset occurs between the ages of 11 and 15 with petty crimes, and then escalates to serious crimes. Secondly, witnessed throughout the dissertation is the fact that development of delinquent behaviour is not a result of a single risk factor but an outcome of multiple risk factors. Subsequently, a suggestion is made for the introduction of multifaceted deterrence programmes, which will holistically deal with the various offending risk factors (i.e. family, community and the offender’s personal risk factors as well as peer and school dynamics). Thirdly, armed robbers are responsible for various other crimes in the process of committing the offence of robbery. Accordingly, this study confirms the criminal career notion that a small number of chronic offenders are responsible for a large number of offences. That is why it is recommended that policy makers pay attention to disrupting the criminal career of this small number of high risk offenders. / Department of Criminology and Security Science / M.A. (Criminology)

Criminal career research postulates that offending behaviour develops over time during the course of one’s life. Thus, delinquency is not an isolated incident which occurs at a certain moment in time. This research comprises a mixed-method study of the criminal career of 40 offenders who perpetrated robberies against the banking and CIT industries. Through this research, an exploration is made for possibilities of using criminal career research to develop results which will guide crime prevention policies. The qualitative methodology used for this research included semi-structured interviews in order to collect information on motivations of armed robbers and the various mechanics (i.e. planning, recruitment, group dynamics) of the crime of armed robbery. Through the use of structured questionnaires, biographical data, information on risk factors and figures on the different aspects of a criminal career, such as age of offending onset, offending frequency and seriousness, and career length, were all gathered. The general findings of this research demonstrate that offending onset occurs between the ages of 11 and 15 with petty crimes, and then escalates to serious crimes. Secondly, witnessed throughout the dissertation is the fact that development of delinquent behaviour is not a result of a single risk factor but an outcome of multiple risk factors. Subsequently, a suggestion is made for the introduction of multifaceted deterrence programmes, which will holistically deal with the various offending risk factors (i.e. family, community and the offender’s personal risk factors as well as peer and school dynamics). Thirdly, armed robbers are responsible for various other crimes in the process of committing the offence of robbery. Accordingly, this study confirms the criminal career notion that a small number of chronic offenders are responsible for a large number of offences. That is why it is recommended that policy makers pay attention to disrupting the criminal career of this small number of high risk offenders. / Department of Criminology and Security Science / M.A. (Criminology)