This study consisted of an evaluation of different processes of change observed during the implementation of a treatment programme for incarcerated rapists that was developed by the researcher for a unique South African context. As no treatment programme was readily available for rapists, such a programme for incarcerated rapists first had to be developed and then implemented before the evaluation process could proceed. In order to do this, the researcher utilized a processual approach as well as two models of change to guide and evaluate the different processes within the broad research process. The Total Transformation Management Process (Mink, Esterhuysen, Mink&Owen, 1993) focused on the process to develop the treatment programme, while the Interchange Cycle (Brock&Salerno, 1994) focused on the changes that took place in the rapists during and after the implementation of the treatment programme. The information obtained from the results suggests that the two models that were used to evaluate the different change processes complemented each other as both models indicated that change took place on different levels. The findings determined that the treatment programme for incarcerated rapists was effective for first-time rapists and recommendations were made for future research. Copyright 2002, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. Please cite as follows: Bergh, LB 2002, Evaluation of a treatment programme for incarcerated rapists, PhD thesis, University of Pretoria, Pretoria, viewed yymmdd < http://upetd.up.ac.za/thesis/available/etd-09302005-100826 / > / Thesis (PhD (Psychology))--University of Pretoria, 2006. / Psychology / unrestricted