Being able to work and communicate effectively in groups is a core pedagogical approach, particularly in psycholo-gy teaching, yet students and tutors rarely receive communication skills training. Existing training approaches areoften aimed only at tutors and are primarily based on theorized versions of conversation or role-play. What is lack-ing is training for tutors and students, based on real-life examples of group work in digital and face-to-face settings,and one that is accessible regardless of geographical location. This presentation will report on the development ofan evidence-based teaching resource that is designed to train students and tutors working in small group settings,using examples from real-life group interaction. The project uses the conversation analytic role-play method (CARM)and conversation analysis as a micro-analytical approach to social interaction to examine critical moments in groupinteraction. The data corpus consists of over 75 hours of problem-based learning tutorials, of which 25 hours wereconducted online, recorded in Sweden. Instances from this corpus will be analysed, focusing on critical momentssuch as how to discuss and argue effectively, how to evaluate group work, and how and when tutors should interve-ne at critical moments. The training resource will be composed of short packages featuring anonymised video clipsand training materials that can be adapted to suit the needs of different students and teachers. The presentation willreport on existing work to date and an early prototype of the training resource.