Body language refers to nonverbal signals transmitted through facial expressions, posture, gestures, eye contact, touch, and spatial positioning—channels through which humans continuously communicate meaning beyond words. Rooted in evolutionary biology and deeply shaped by culture, nonverbal communication comprises an estimated 55-65% of interpersonal meaning exchange, operating largely through unconscious processes that reveal genuine emotions, intentions, and social dynamics. Mastering body language reading requires understanding baseline behavior—a person's normal nonverbal patterns—and detecting meaningful deviations, alongside recognizing that no single gesture carries universal meaning; interpretation demands attention to contextual clusters and congruence between verbal and nonverbal channels.
What This Cheat Sheet Covers
This topic spans 17 focused tables and 135 indexed concepts. Below is a complete table-by-table outline of this topic, spanning foundational concepts through advanced details.
Table 1: Universal Facial Expressions
Seven emotions show up on the face the same way in every culture on earth—the work of Paul Ekman, who mapped each one to a precise pattern of muscle movement. Learning these baseline displays is the foundation for everything else here, because once you know what a genuine emotion looks like, the fakes and the leaks become obvious.
| Expression | Example | Description |
|---|---|---|
Raised cheeks Crow's feet wrinkles Upturned mouth corners | • Duchenne smile activates both zygomatic major (mouth) and orbicularis oculi (eyes) muscles • genuine happiness shows eye crinkling | |
Drooping eyelids Downturned mouth Loss of muscle tone | • Inner corners of eyebrows drawn together and upward • lower lip may protrude or tremble | |
Lowered brows Tightened lips Glaring stare | • Eyebrows pulled down and together • eyes opened wide • nostrils flared • jaw clenched | |
Raised eyebrows Wide eyes Open mouth | • Eyebrows raised straight up • upper eyelids raised exposing white sclera • face often pulls back |