First impressions are powerful and are formed in all sorts of social settings, from job interviews and first dates to court rooms and classrooms.  We regularly make snap judgments about others, deciding whether people are trustworthy, confident, extraverted, likable, and more. Although we have all heard the old adage, “don’t judge a book by its cover,” we do just that. And at the same time that we are judging others, we in turn communicate a great deal of information about ourselves – often unwittingly – that others use to size us up.