This document discusses the concepts of groupthink and culture of honor. It summarizes Janis' (1971) theory of groupthink, which proposes that group cohesiveness and desire for conformity can lead groups to make faulty decisions. Symptoms of groupthink include perceptions of invulnerability and pressure to conform. Remedies include encouraging open discussion of criticisms and input from outsiders. The document also summarizes Nisbett and Cohen's (1996) theory of culture of honor, which proposes that some cultures socialize the use of violence to defend one's reputation or property. It explores how culture can influence perceptions and behaviors.