CLEP Introduction to Sociology Exam Prep

Answer - D - Gustave LeBon developed the contagion theory, stating that crowds powerfully influence its members.

Key Takeaway: A French sociologist, Gustave LeBon developed contagion theory, which maintained that crowds powerfully influence its members. His work on the psychology of crowds became highly important in the first half of the twentieth century, especially in the context of how subordinate groups react to media.