This study uses latent class analysis and latent transition analysis to model and compare patterns of offending over time for males and females by: (1) identifying qualitative dimensions of offending; (2) modeling how patterns of offending change over time; and (3) exploring factors related to patterns of offending. This is a secondary analysis of data from the Edinburgh Study of Youth Transition and Crime, a longitudinal study consisting of a cohort of about 4,000 young people from secondary schools in the City of Edinburgh who responded to questionnaires administered between 1988 and 2001, when they were about 12, 13, 14, and 15 years old. Previous studies of offending have used trajectory modeling to explore the course of offending from onset to termination, but the models are generally based on a count of types of offences aggregated across individuals over time, making it difficult to determine whether individuals exhibit more versatility or specialization in offending or switch offences from one point in time to another. In addition, most of the studies on patterns of offending have focused primarily on males. An understanding of patterns of offending over time for both males and females is important for the design and selection of developmentally appropriate prevention/treatment strategies. The present study adds to the literature by (1) further exploring the small and understudied literature on offence transitions; (2) examining more closely the development of female offending separately from and in relation to male offending; and (3) exploring a range of factors (criminogenic and non-criminogenic) related to the development of offending for both males and females. While the same number of qualitative dimensions (latent classes) characterised male and female offending in this study, there were some structural differences. There was also evidence of shifts in the qualitative dimensions for males and females over time. Finally, those factors classified as criminogenic were more likely to differentiate among the latent classes than those classified as non-criminogenic.

This study uses latent class analysis and latent transition analysis to model and compare patterns of offending over time for males and females by: (1) identifying qualitative dimensions of offending; (2) modeling how patterns of offending change over time; and (3) exploring factors related to patterns of offending. This is a secondary analysis of data from the Edinburgh Study of Youth Transition and Crime, a longitudinal study consisting of a cohort of about 4,000 young people from secondary schools in the City of Edinburgh who responded to questionnaires administered between 1988 and 2001, when they were about 12, 13, 14, and 15 years old. Previous studies of offending have used trajectory modeling to explore the course of offending from onset to termination, but the models are generally based on a count of types of offences aggregated across individuals over time, making it difficult to determine whether individuals exhibit more versatility or specialization in offending or switch offences from one point in time to another. In addition, most of the studies on patterns of offending have focused primarily on males. An understanding of patterns of offending over time for both males and females is important for the design and selection of developmentally appropriate prevention/treatment strategies. The present study adds to the literature by (1) further exploring the small and understudied literature on offence transitions; (2) examining more closely the development of female offending separately from and in relation to male offending; and (3) exploring a range of factors (criminogenic and non-criminogenic) related to the development of offending for both males and females. While the same number of qualitative dimensions (latent classes) characterised male and female offending in this study, there were some structural differences. There was also evidence of shifts in the qualitative dimensions for males and females over time. Finally, those factors classified as criminogenic were more likely to differentiate among the latent classes than those classified as non-criminogenic.

This study explores the phenomenon of serial murder from the perspective of narrative psychology. Using a case study approach and a grounded theory analytical process this qualitative study utilised the narrative concept of the imago to explore the motivation and development of those who commit serial murder in South Africa. The aim is increase our theoretical understanding of serial murder in directions that support offender profiling. Semi-structured interviews with two South African men who committed serial murder were undertaken and analysed alongside archival data. Their imagoes formed the focus of the analysis. This analysis included a consideration of how the individual’s motivations and developmental patterns were reflected in their crime scenes. This study demonstrated that imagoes play a significant role in the motives for offending, and development of offence behaviours, in men who commit serial murder. The imagoes help create motives; then embody these motives by encouraging and justifying certain types of behaviour in the individual. Interactions between imagoes were particularly significant in this regard. The dominant imago associated with the individual’s self was also associated with the development of a behavioural template for offending, and was thus especially significant in embodying motive. The development of offending was further encouraged by the separation between imagoes involved in offending and those that are not. However differences between the case studies were also observed, such as the extent to which imagoes develop in interaction with others and the roles played by their imagoes in the developmental narrative of their offending. These findings shed novel theoretical light on the study of serial murder in South Africa. It suggests directions for research into the role of narrative and culture in offending, and for the study of the imago as an embodied mode of interpersonal interaction. It also offers opportunities for research aiming to support offender profiling, and proposes a possible synthesis of competing conceptions of serial murder. / Thesis (PhD)--University of Pretoria, 2010. / Psychology / unrestricted