Group discussions are used to assess students' personalities and abilities. They involve 8-12 members discussing a topic for 20-30 minutes. Prerequisites include knowledge, communication skills, and being calm. Benefits are stimulating thinking, expanding knowledge, and revealing strengths. Features include free expression of opinions on a given topic. Do's include making logical points and listening actively. Don'ts are interrupting others or changing opinions stubbornly. Important aspects are being assertive, a good listener, using appropriate language, and accepting criticism politely. Frequently discussed topics center around social, economic, and technological issues in India.