The document defines a group discussion as a method used to assess students' personalities through a discussion among 8-12 members on a given topic within a 20-30 minute time limit. It lists the prerequisites as having topics given by panelists, preparation, self-confidence, communication skills, and body language. Benefits include stimulating new thinking, expanding knowledge, understanding strengths and weaknesses, and revealing leadership qualities. The document provides dos and don'ts, with dos including listening, initiating discussion, supporting points, and summarizing, and don'ts as being shy, overspeaking, arguing, and making irrelevant comments.