emotional contagion, n.All

Emotional contagion (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠McDougall's direct induction of emotion: seeing signs of a feeling tends to arouse it in us, the more so the more people show it.