Although studies of great ape body language have been carried out before, none has focused so closely on the intentional meanings of specific gestures.
The findings don't just reveal how apes communicate - they also shed light on the origins of human speech millions of years ago.
It shows the apes have at least 25 signals or gestures for 'I want to play', for example - ranging from a back roll and somersault, to a yank of their hair or a bite of the air.
Other clowning gestures for play include placing objects on their heads, playing with their faces and raising their arms.
As a deliberate signal to others it can be sexually enticing, saying 'I would like to like you'.
And the results have been compiled into the first ape dictionary - a guide on how our cousins chat to each other in the wild.Teeth body language, Lips body language * Argument * Brand management * Change Management * Coaching * Communication * Counseling * Game Design * Human Resources * Job-finding * Leadership * Marketing * Politics * Propaganda * Rhetoric * Negotiation * Psychoanalysis * Sales * Sociology * Storytelling * Teaching * Warfare * Workplace design * Assertiveness * Body language * Principles * Behaviors * Beliefs * Brain stuff * Conditioning * Coping Mechanisms * Critical Theory * Culture * Decisions * Emotions * Evolution * Gender * Games * Groups * Habit * Identity * Learning * Meaning * Memory * Motivation * Models * Needs * Personality * Power * Preferences * Research * Relationships * SIFT Model * Social Research * Stress * Trust * Values * Alphabetic list * Theory types – About – Guest Articles – Blog!If an orangutan blows a raspberry, smacks you on the side of your body or gives you a nip on the arm, don't worry. For the great apes communicate intelligently using an unspoken vocabulary of gestures, movements and smacks, scientists say.This can also indicate contempt and a form of duper's delight, especially when done briefly.Pushed in front of the teeth, pushing out the lips, can also indicate uncertainty.