Pilate's actual responsibility remains: for John the Son of man must be «lifted up,» crucified, so the Roman means of punishment is essential. (religion-online.org)
Instead, the interest in body language is for predicting bad behavior and devising different means of punishment. (dogstardaily.com)
You can find more explanations on the behavioral meaning of punishment and reinforcement in the links below (thehappypuppysite.com)