Which term describes the rapid spread of new ways of thinking in a crowd?

• A. Contagion
• B. Convergence theory
• C. Emergent Norm theory
• D. Panic

Answer: (A)

Contagion describes how new ideas, attitudes, or beliefs spread rapidly through a crowd. In such settings, people pick up thinking from those around them through imitation, social cues, and heightened emotion, so a novel way of thinking can sweep through quickly even without deliberate discussion. The speed comes from the crowd’s interconnected influence: observers are influenced by others’ actions, and momentum creates a wave of acceptance. This differs from convergence theory, which says crowds form because like-minded individuals come together rather than because an idea spreads; emergent norm theory explains how new norms arise during collective action, not the rapid diffusion of thinking; and panic focuses on a fear-driven emotional response rather than the spread of ideas.