There Is No Nonverbal Dictionary
The first guideline for decoding nonverbal communication is to realize that there is no nonverbal dictionary. Some nonverbal scholars and many nonverbal skill trainers have tried to catalog nonverbal communication like we do verbal communication to create dictionary-like guides that people can use to interpret nonverbal signals. Although those guides may contain many valid “rules” of nonverbal communication, those rules are always relative to the individual, social, and cultural contexts in which an interaction takes place. In short, you can’t read people’s nonverbal communication like a book, and there are no A-to-Z guides that capture the complexity of nonverbal communication. Peter J. DePaulo, “Applications of Nonverbal Behavior Research in Marketing and Management,” Applications of Nonverbal Behavior Theories and Research, ed. Robert S. Feldman (Hillsdale, NJ: Lawrence Erlbaum, 1992), 64. Rather than using a list of specific rules, I suggest people develop more general tools that will be useful in and adaptable to a variety of contexts.