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Tone of Voice. The manner in which a verbal statement is presented, such as its rhythm, breathiness, hoarseness, or loudness. Tone of voice reflects psychological arousal, emotion, and mood. It may also carry social information, as in a sarcastic, superior, or submissive manner of speaking. The more threatened or aggressive a person becomes, the lower and harsher his or her voice turns, thus, the person seem bigger.
Eye Contact. A visual connection made as one person gazes into the eyes of another. Gazing at another's eyes arouses strong emotions. Thus, eye contact rarely lasts longer than three seconds before one or both viewers experience a powerful urge to glance away. Breaking eye contact lowers stress levels. In Japan, listeners are taught to focus on a speaker's neck in order to avoid eye contact, while in the U.S., listeners are encouraged to gaze into a speaker's eyes.
Blinking. A rapid closing and opening of the eyes. Our blink rate reflects psychological arousal in the manner of a polygraph test. The normal, resting blink rate of a human is 20 closures per minute, with the average blink lasting one quarter of a second. Significantly faster rates may reflect emotional stress.
Raising Eyebrows. To lift the arch of short hairs above the eye, as in uncertainty, disbelief, surprise, or exasperation. Raising the eyebrows adds intensity to a facial expression. Brow-raising can strengthen a dominant stare, exaggerate a submissive pout, or boost the energy of a smile. In tandem with head-tilt-back, raising one or both eyebrows suggests a supercilious air of disdain, haughtiness, or pride.
Lowering Eyebrows. To frown or scowl, as in anger, concentration, displeasure, or thought. To depress, knit, pucker, or wrinkle the brow. Lowering the eyebrows is a sensitive indicator of disagreement, doubt, or uncertainty.