1The mere-exposure effect—the tendency to like someone better simply because of frequent exposure to him or her—has been observed in studies. 2In one study, college students were shown pictures of faces. 3Some of the faces were shown as many as twenty-five times; others, only once or twice. 4Afterward, subjects indicated how much they liked each face and how much they thought they would like the person pictured. 5The more often the subjects had seen a face, the more they said they liked it and thought they would like the person. 6The same result has been found for repeated exposure to actual people. 7In a recent study, researchers enlisted the aid of four college women who served as confederates in an experiment. 8A pretest showed that all women were rated as equally attractive. 9In the study, each woman attended a large lecture class in social psychology, posing as a student in the course. 10Each woman attended a different number of class sessions—once, five times, ten times, or fifteen times during the term. 11At the end of the term, students in the class were asked to rate each woman, based on a casual photo shown as a slide. 12The more often students had seen the woman, the more they thought they would like her.