found that subjects rated the pictures with their own face morphed into it as more attractive. DeBruine (2002) demonstrated in her research how subjects entrusted more money to their opponents in a game play, when the opponents were presented as similar to them. Little, Burt & Perrett (2006) examined similarity in sight for married couples and found that the couples were assessed at the same age and level of attractiveness. A speed-dating experiment done on graduate students from Columbia University showed that although physical attractiveness is preferred in a potential partner, men show a greater preference for it than women. However, more recent work suggests that sex differences in stated ideal partner-preferences for physical attractiveness disappear when examining actual preferences for real-life potential partners. For example, Eastwick and Finkel (2008) failed to find sex differences in the association between initial ratings of physical attractiveness and romantic interest in potential partners during a speed dating paradigm. Quality of voice In addition to physical looks, quality of voice has also been shown to enhance interpersonal attraction. Oguchi and Kikuchi (1997) had 25 female students from one university rank the level of vocal attraction, physical attraction, and overall interpersonal attraction of 4 male students from another university. Vocal and physical attractiveness had independent effects on overall interpersonal attraction. In a second part of the same study, these results were replicated in a larger sample of students for both genders (62 subjects, 20 males and 42 females with 16 target students, 8 males and 8 females). Similarly, Zuckerman, Miyake and Hodgins (1991) found that both vocal and physical attractiveness contributed significantly to observers' ratings of targets for general attractiveness. These results suggest that when people evaluate one's voice as attractive, they also tend to evaluate that person as physically attractive. Attitudes Based on cognitive consistency theories, difference in attitudes and interests can lead to dislike and avoidance whereas similarity in attitudes promotes social attraction. Miller (1972) pointed out that attitude similarity activates the perceived attractiveness and favorability information from each other, whereas dissimilarity would reduce the impact of these cues. The studies by Jamieson, Lydon and Zanna (1987–88) showed that attitude similarity could predict how people evaluate their respect for each other, and also predict social and intellectual first impressions – the former by activity preference similarity and the latter by value-based attitude similarity. In intergroup comparisons, high attitude-similarity would lead to homogeneity among