Contagion

Contagion may refer to:

Medicine

Social contagion, the spontaneous spread of thoughts, feelings, or behaviors through a group or network
Emotional contagion, a tendency to feel others' emotions
Behavioral contagion, a tendency to mimic others' behavior
Law of contagion, a folk belief related to magical thinking
Financial contagion, a scenario in which financial shocks spread to other financial sectors
Hysterical contagion, an effect in which a group exhibits physical symptoms due to a psychological cause
Sacred contagion, the belief that spiritual properties pass from one entity to another
Complex contagion, a social networking phenomenon
Contagion heuristic, a psychological technique