Group Discussions can be topic-based or case-based.
Topic based GDs can be classified into four groups:
1. Current Affairs Topics
These topics include discussions which have been in the news recently. These topics are given to judge analytical skills and general awareness.
2. Factual Topics
Factual topics are about practical things, which an ordinary person is aware of in his day-to-day life. Typically these are about socio-economic and general topics. A factual topic for discussion gives a candidate a chance to prove that he is aware and has good knowledge. In factual topics, complete group agrees or disagrees with the topic and there is less debate. Given a problem, the group is to find some solutions.
3. Controversial Topics
Controversial topics are the ones that are argumentative in nature. In GDs where these topics are given for discussion, the noise level is usually high, there may be tempers flying. The idea behind giving a topic like this is to see how much maturity the candidate is displaying by keeping his temper in check, by rationally and logically arguing his point of view without getting personal and emotional.
4. Abstract Topics
Abstract topics are about intangible things. These topics are not given often for discussion, but their possibility cannot be ruled out. These topics test your lateral thinking and creativity.
A case study is given instead of any topic. A candidate is required to study the case and then discuss among the group. The case study tries to simulate a real-life situation. The situation is generally problematic and there are no incorrect answers or perfect solutions. The objective in the case study is to get you to think about the situation from various angles.