Expressive robot post#3

i learned that certain gestures one might do can bring trust or distrust among others, i also learned that leaning back wich i do a bit is considered a untrusting action, i also learned that they can make a robot show emotions, i liked how a robot could show trust and distrust, i didn't like how i learned one of my leaning back in a chair things is called a untrusting act, i wonder how they made that robot show trust and untrust?