Video Lecture to accompany Module 5 Interpersonal Relationships CONCEPTS: interpersonal attraction, matching hypothesis, physical attractiveness, golden ratio, facial symmetry, similarity, interfaith relationships, interracial relationships, complimentarity, 'opposites attract', familiarity, mere exposure effect, proximity, propinquity, reciprocal liking, Social Exchange theory, cost, benefit, risk, reward, reward potential, cost-benefit, comparison, alternate comparison, dopamine, serotonin, testosterone, estrogen