The study provided a general orientation of crimes against children in South Africa to buttress the rationale of the research. A concise definition of crime, child, child abuse, sexual child abuse, physical child abuse, victims and perpetrators of sexual crimes against children. The research described the various forms of crimes against children in Guateng, the causes and explanations. An interpretation of the empirical study was provided in this research. It focussed on the perpetrators and victims of child sex crimes. The types of offenders, the motives and theoretical explanations of their behaviour. The modus operandi of the perpetrators found in the empirical study. The various characteristics of victims and perpetrators, the legal processes in the adjudication of child sexual offenders. The research examined some of the prevention strategies of child sexual crimes. Findings of the empirical research are provided. / Criminology / M.A. (Criminology)

La pléthysmographie pénienne est reconnue comme la méthode la plus rigoureuse pour l’évaluation des intérêts sexuels. Cet instrument pourrait cependant bénéficier d’amélioration au niveau de sa validité écologique et de sa vulnérabilité aux tentatives de falsification. Cet outil est également confronté aux contraintes éthiques et légales liées à la présentation de stimuli produits à partir de modèle humain pour susciter l’excitation sexuelle. La présente thèse doctorale propose de pallier aux lacunes de la procédure pléthysmographique en la combinant à des stimuli générés par ordinateur présentés en immersion virtuelle et à la vidéo-oculographie. Dans le cadre d’une première étude empirique, il s’agit de déterminer si l’usage de stimuli générés par ordinateur présentés en immersion virtuelle est préférable à la modalité auditive actuellement utilisée. Les réponses érectiles d’agresseurs sexuels d’enfants et d’hommes sans paraphilie connue sont enregistrées et la capacité des deux modalités à produire des profils d’excitation sexuels et des indices de déviance propres aux intérêts sexuels est comparée. Dans le cadre d’une seconde étude expérimentale, les mouvements oculaires sont analysés afin de détecter les tentatives de contrôle volontaire de la réponse érectile lors d’une procédure d’évaluation pléthysmographique. Les réponses érectiles et les mouvements oculaires d’hommes sans dossier judiciaire sont enregistrés lors du visionnement de stimuli sous trois différentes conditions, dont une tâche de suppression de la réponse érectile. Dans l’ensemble, les résultats démontrent que les stimuli générés par ordinateur présentés en immersion virtuelle génèrent des profils d’excitation sexuelle ainsi que des indices de déviance ayant une précision de classification et de discrimination significativement supérieure à la modalité auditive. D’autre part, les résultats soulignent la capacité des mouvements oculaires à identifier une signature oculaire propre à l’utilisation d’une stratégie cognitive d’inhibition de la réponse érectile qui se caractérise notamment par la mise à l’écart du contenu sexuel et le ralentissement global du processus d’exploration visuel. Ce projet de recherche souligne les avantages inhérents à la présentation en immersion virtuelle de stimuli générés par ordinateur ainsi qu’à l’étude des mouvements oculaires lors de l’évaluation pléthysmographique et vient appuyer l’implantation progressive de cette modalité dans les milieux d’évaluations cliniques. / Penile plethysmography is considered to be the most rigorous method for sexual interest assessment. The instrument could however benefit from improvements in terms of its ecological validity and vulnerability to faking attempts. This tool also faces ethical and legal constraints related to the presentation of stimuli depicting human subjects to entice sexual arousal. This doctoral thesis seeks to address penile plethysmography’s shortcomings by combining it with computer-generated stimuli presented in virtual immersion as well as eye-tracking devices. A first empirical study was conducted to determine whether the presentation of computer-generated stimuli in virtual immersion is preferable to the auditory modality currently being used. Erectile responses from child molesters and men without sexual deviances were recorded and the ability of both modalities to generate sexual arousal profiles and deviance differentials indicative of sexual interests were compared. In a second experimental study, eye-movements were explored in an attempt to identify the presence of cognitive strategies responsible for erectile inhibition during the plethysmographic procedure. Erectile responses and eye-movements of men without criminal records were recorded when viewing stimuli under three different conditions, including an erectile inhibition task. Overall, results show that the presentation of computer-generated stimuli in virtual immersion generates sexual arousal profiles and deviance differentials, which allow significantly higher classification accuracy and discriminant performance than the auditory modality. Results also highlight the possibility, through eye-movement analyses, to identify an ocular signature specific to the use of cognitive strategies for erectile inhibition, which is characterized by a partial avoidance of the sexual content and a general deceleration of the visual exploration process. This project exposes the benefits inherent to the presentation of computer-generated stimuli in virtual immersion and the use of eye-tracking devices for penile plethysmography assessments and supports the progressive implementation of this modality in clinical settings.

La pléthysmographie pénienne est reconnue comme la méthode la plus rigoureuse pour l’évaluation des intérêts sexuels. Cet instrument pourrait cependant bénéficier d’amélioration au niveau de sa validité écologique et de sa vulnérabilité aux tentatives de falsification. Cet outil est également confronté aux contraintes éthiques et légales liées à la présentation de stimuli produits à partir de modèle humain pour susciter l’excitation sexuelle. La présente thèse doctorale propose de pallier aux lacunes de la procédure pléthysmographique en la combinant à des stimuli générés par ordinateur présentés en immersion virtuelle et à la vidéo-oculographie. Dans le cadre d’une première étude empirique, il s’agit de déterminer si l’usage de stimuli générés par ordinateur présentés en immersion virtuelle est préférable à la modalité auditive actuellement utilisée. Les réponses érectiles d’agresseurs sexuels d’enfants et d’hommes sans paraphilie connue sont enregistrées et la capacité des deux modalités à produire des profils d’excitation sexuels et des indices de déviance propres aux intérêts sexuels est comparée. Dans le cadre d’une seconde étude expérimentale, les mouvements oculaires sont analysés afin de détecter les tentatives de contrôle volontaire de la réponse érectile lors d’une procédure d’évaluation pléthysmographique. Les réponses érectiles et les mouvements oculaires d’hommes sans dossier judiciaire sont enregistrés lors du visionnement de stimuli sous trois différentes conditions, dont une tâche de suppression de la réponse érectile. Dans l’ensemble, les résultats démontrent que les stimuli générés par ordinateur présentés en immersion virtuelle génèrent des profils d’excitation sexuelle ainsi que des indices de déviance ayant une précision de classification et de discrimination significativement supérieure à la modalité auditive. D’autre part, les résultats soulignent la capacité des mouvements oculaires à identifier une signature oculaire propre à l’utilisation d’une stratégie cognitive d’inhibition de la réponse érectile qui se caractérise notamment par la mise à l’écart du contenu sexuel et le ralentissement global du processus d’exploration visuel. Ce projet de recherche souligne les avantages inhérents à la présentation en immersion virtuelle de stimuli générés par ordinateur ainsi qu’à l’étude des mouvements oculaires lors de l’évaluation pléthysmographique et vient appuyer l’implantation progressive de cette modalité dans les milieux d’évaluations cliniques. / Penile plethysmography is considered to be the most rigorous method for sexual interest assessment. The instrument could however benefit from improvements in terms of its ecological validity and vulnerability to faking attempts. This tool also faces ethical and legal constraints related to the presentation of stimuli depicting human subjects to entice sexual arousal. This doctoral thesis seeks to address penile plethysmography’s shortcomings by combining it with computer-generated stimuli presented in virtual immersion as well as eye-tracking devices. A first empirical study was conducted to determine whether the presentation of computer-generated stimuli in virtual immersion is preferable to the auditory modality currently being used. Erectile responses from child molesters and men without sexual deviances were recorded and the ability of both modalities to generate sexual arousal profiles and deviance differentials indicative of sexual interests were compared. In a second experimental study, eye-movements were explored in an attempt to identify the presence of cognitive strategies responsible for erectile inhibition during the plethysmographic procedure. Erectile responses and eye-movements of men without criminal records were recorded when viewing stimuli under three different conditions, including an erectile inhibition task. Overall, results show that the presentation of computer-generated stimuli in virtual immersion generates sexual arousal profiles and deviance differentials, which allow significantly higher classification accuracy and discriminant performance than the auditory modality. Results also highlight the possibility, through eye-movement analyses, to identify an ocular signature specific to the use of cognitive strategies for erectile inhibition, which is characterized by a partial avoidance of the sexual content and a general deceleration of the visual exploration process. This project exposes the benefits inherent to the presentation of computer-generated stimuli in virtual immersion and the use of eye-tracking devices for penile plethysmography assessments and supports the progressive implementation of this modality in clinical settings.

The study provided a general orientation of crimes against children in South Africa to buttress the rationale of the research. A concise definition of crime, child, child abuse, sexual child abuse, physical child abuse, victims and perpetrators of sexual crimes against children. The research described the various forms of crimes against children in Guateng, the causes and explanations. An interpretation of the empirical study was provided in this research. It focussed on the perpetrators and victims of child sex crimes. The types of offenders, the motives and theoretical explanations of their behaviour. The modus operandi of the perpetrators found in the empirical study. The various characteristics of victims and perpetrators, the legal processes in the adjudication of child sexual offenders. The research examined some of the prevention strategies of child sexual crimes. Findings of the empirical research are provided. / Criminology and Security Science / M.A. (Criminology)

Several studies suggest that sexual assaults are experienced differently by males than by females. In dominant discourses in which sexual perpetration is associated with males and sexual victimisation with females, males are expected to practice and exhibit hegemonic masculinity. This gendered perception of sexual assaults means that female perpetration of male child sexual abuse often goes unrecognised and that male perpetration is particularly problematic for male victims. Using a feminist critical paradigm and critical discourse analysis as a research design, this study explored how a sample of male victims in Zimbabwe experienced sexual abuse as children and how they were affected by it. The study, further, explored how the male victims of childhood sexual abuse sought to reconcile the experience of victimisation with their identity as males. Nine men participated in the study. The sample was, due to the sensitive nature of the topic, purposively selected using letters describing the nature of the study and inviting participation. The letters were distributed through diverse channels, including a newspaper with national coverage. Most participants reported experiences of female perpetrated abuse. The study found that, in keeping with dominant discourses of hegemonic masculinity, the participants struggled to construct themselves as victims. Many of the participants were considerably and negatively affected by having been sexually abused. Participants utilised a variety of methods to come to terms with the fact that they were males who had been victimised. / Psychology / M.A. (Psychology)

The problem that motivated the study was that the way in which juvenile sex offenders are configuring themselves, and the way that self-development is currently understood, potentially has negative implications for the way they may be treated in therapy. The Gestalt paradigm was the lens through which this phenomenon was explored. The research method was from a qualitative perspective and was an explorative and descriptive analysis of the factors that contribute to this self-configuration. Data was collected by way of unstructured and semi-structured interviews and systematically represented by the emergent themes. Results showed the factors that contribute to the self-configuration of the juvenile sex offender. Recommendations were made to the juveniles, their caretakers and the social workers. The researcher concluded that the Gestalt approach to self-configuration, with its emphasis on the field and relationships, provides a coherent lens through which to approach the phenomenon of juvenile sex offenders. / Social Work / M. Diac. (Play Therapy)

The problem that motivated the study was that the way in which juvenile sex offenders are configuring themselves, and the way that self-development is currently understood, potentially has negative implications for the way they may be treated in therapy. The Gestalt paradigm was the lens through which this phenomenon was explored. The research method was from a qualitative perspective and was an explorative and descriptive analysis of the factors that contribute to this self-configuration. Data was collected by way of unstructured and semi-structured interviews and systematically represented by the emergent themes. Results showed the factors that contribute to the self-configuration of the juvenile sex offender. Recommendations were made to the juveniles, their caretakers and the social workers. The researcher concluded that the Gestalt approach to self-configuration, with its emphasis on the field and relationships, provides a coherent lens through which to approach the phenomenon of juvenile sex offenders. / Social Work / M. Diac. (Play Therapy)