Do extroverts gesture more than introverts during a conversation? People move their hands when they talk. The type and frequency of those gestures may vary with personality. You start by giving each subject a short questionnaire. This classifies them as introverted or extroverted. Then you interview them one-on-one with open-ended questions designed to prompt detailed answers. While they talk, you secretly check off gestures from a prepared list: - hands in pockets or directional pointing - fist clenching or leaning forward - physical reenactment Compare total interview time and gesture variety between the two groups. Extroverted subjects used more varied and exaggerated gestures. Introverted subjects showed more self-directed movements like playing with hair or resting hands on surfaces.