Gait cues reveal mood: study links limb swing to anger and sadness

New research shows that how a person walks—especially arm and leg swing amplitude—can signal their emotional state. In experiments, observers correctly guessed emotions from point-light gait videos, with bigger swings associated with anger and smaller swings with sadness or fear; altering swing amplitude made these emotions easier to infer, suggesting gait is a key nonverbal cue with potential applications in CCTV screening and mood-monitoring wearables, though ethical considerations remain.