The aim of this study is to investigate the effectiveness of group work as a strategy for attribution retraining and improving students' motivational styles. Students were first categorised into one of three motivational styles: learned helplessness, self-worth motivation and mastery orientation. In the intervention procedure, selected students from each of these three categories were subjected to an intervention procedure requiring the students to work in groups, with the emphasis on personal effort as the major contributor to group success. Post-intervention assessment of motivation showed an improvement in the motivation of self-worth motivated students although there was generally a decrease in mastery orientation amongst students in both the control as well as the experimental groups. (Contains 4 tables.)