What makes a good leader? What are some positive and negative roles that people play in groups? How do groups solve problems and make decisions in order to accomplish their task? This chapter will begin to answer those questions, because leadership and group member roles influence the performance of small groups. Whether you consider yourself a leader or not, all members of a group can perform leadership functions, and being familiar with these behaviors can improve your group’s performance. Likewise, knowing the various roles that typically emerge in a group can help you better understand a group’s dynamics and hopefully improve your overall group experience.