Group discussions involve people sharing ideas on a common topic from different perspectives. There are three types of group discussions: topic-based on controversial, abstract, or factual topics; case study based; and parts including initiation, continuation, and conclusion. Effective communication, in-depth discussion, equal participation and teamwork are features of good group discussions. Reference checks verify an applicant's information by contacting previous employers and schools to check work experience, education, skills, and predict job success.