Expressions: smile, frown • Gestures: thumbs up, thumbs down, peace sign • Paralinguistics: volume, tone, inflection, pitch • Body Language: arm-crossing, leg-crossing, pacing, restlessness • Proxemics: personal space • Eye Gaze: looking, staring, blinking • Haptics: touch • Appearance: clothing, hairstyle • Artifacts: objects, images, uniforms