This paper describes the introduction of Problem-Based Learning (PBL) into a final-year option module in psychology. The background and rationale for the changes introduced are discussed and the experience of PBL is considered from the point of view of tutor and students. The introduction of PBL considerably increased student attainment in the module and enhanced the module experience for students and for the tutor. It is suggested that PBL can be an effective vehicle for enabling students to acquire knowledge and critical understanding of psychology and that this can be assessed effectively using traditional methods that focus on outcomes rather than processes.