It has been said, and I have experienced, the effect of exposure time on the increase in attractiveness of women. I'm going to presume this the generally the same for other men. I presume the same thing might happen for women's impressions of men, but I can't speak to that. This usually happens in the workplace where repeated contact with someone is commonplace. When I first start at a new place, I'll meet new girls and get a first superficial impression of them. I will first see the flaws in them - a big nose, a weak chin, etc. etc. This is not a conscious thing, it's just the first impression I see what makes them unique. But after days or weeks of intreraction with them, as I get to know them, these things disappear and I start seeing them as more and more attractive. Surely this has many factors involved - as I see them smile, or as I selectively remember times when they are at their most flattering (I'll choose to remember the angora sweater and forget the track suit). Now, I presume that much of the effect comes from getting to know them. As I interact with them, I appreciate them more and get to know them and like them, and I'm sure that baises my impression of their attractiveness. There's nothing that makes a woman more beautiful than a smile on her face - especialy if she's smiling at me! In fact, if my interaction is quite positive, I can find them quite attractive. (If I were a rating man, their "standing" would climb up the charts). But here's my question: does it work in reverse? If you meet someone and form a first impression of their attractiveness, and then they turn out to not get along with you at all, has anyone experienced the effect of someone starting to appear less attractive?