Research indicates that discussing topics learned from reading or lectures is one of the most effective methods for retaining information. Furthermore, engaging in discussions with a diverse group of peers often leads to insights that may not arise otherwise. Study groups come in various formats, but they typically consist of small groups, typically ranging from 6 to 30 participants. In many study groups, the leader presents material and facilitates discussions afterward. Alternatively, some groups engage in ongoing discussions throughout the session, with the leader serving as a moderator. In certain cases, both the leader and group members take turns presenting material and leading discussions.