: Exposure to terror, particularly during adolescence, has long-term effects on physical health, mental well-being, and educational outcomes.

: Acts intended to intimidate or coerce civilian populations.

: Creating a "climate of fear" that reaches a wide audience beyond the immediate victims. The Psychology of Terror

: Using violence or the threat of it to influence government policy or affect government conduct.

: Research suggests fear is intensified when a threat is perceived as severe and diffuse (uncontrollable).