Most nonverbal cues vary wildly between people and situations, which makes them useless when applied to strangers. Only focusing on the obvious ones is worth the time.
Some obvious ones:
walking away to end a conversation
stepping back (wants space)
looking away and not responding (wants to be left alone)
Some inconsistent ones I frequently hear stated as facts
crossing arms is being defensive (they could just be cold!)
looking away, but still talking, is showing disinterest (they might have difficulty with maintaining eye contact)
Most nonverbal cues vary wildly between people and situations, which makes them useless when applied to strangers. Only focusing on the obvious ones is worth the time.
Some obvious ones:
Some inconsistent ones I frequently hear stated as facts