Whenever I encounter someone new, either socially, on TV, or even passing them in the street, I form an instant opinion about them based purely on what I see and hear. I mentally grade them somewhere between "highly attractive" and "grossly repulsive". This may of course change when, and if, I ever get to know them better.
I assume other people make similar off-the-cuff and possibly irrational judgements.
My questions are: Do we all apply the same set of rules when deciding who we like or dislike? And what ARE the rules?