The ability to understand and critique empirical research findings, and to evaluate the efficacy of therapeutic interventions, is essential to the professional psychologist as a scientist-practitioner. This subject equips students with advanced skills in utilising the research literature to guide and enhance their professional practice, design interventions to test clinically relevant hypotheses, and critically evaluate the effectiveness of existing research based on empirical evidence. It includes instruction in both quantitative and qualitative research design, program evaluation, single case designs and pilot studies.