Interpersonal attraction as a part of social psychology is the study of the attraction between people which leads to the development of platonic or romantic relationships. It is distinct from perceptions such as physical attractiveness, and involves views of what is and what is not considered beautiful or attractive. Within the study of social psychology, interpersonal attraction is related to how much one likes or dislikes another person. It can be viewed as a force acting between two people that tends to draw them together and to resist their separation. When measuring interpersonal attraction, one must refer to the qualities of the attracted and those of the attractor to achieve predictive accuracy. It is suggested that to determine attraction, both the personalities and the situation must be taken into account. Measurement In social psychology, interpersonal attraction is most-frequently measured using the Interpersonal Attraction Judgment Scale developed by Donn Byrne. It is a scale in which a subject rates another person on factors such as intelligence, knowledge of current events, morality, adjustment, likability, and desirability as a work partner. This scale seems to be directly related with other measures of social attraction such as social choice, feelings of desire for a date, sexual partner or spouse, voluntary physical proximity, frequency of eye contact, etc. Kiesler and Goldberg analyzed a variety of response measures that were typically utilized as measures of attraction and extracted two factors: the first, characterized as primarily socioemotional, included variables such as liking, the desirability of the person's inclusion in social clubs and parties, seating choices, and lunching together. The second factor included variables such as voting for, admiration and respect for, and also seeking the opinion of the target. Another widely used measurement technique scales verbal responses expressed as subjective ratings or judgments of the person of interest. Causes and effects There are factors that lead to interpersonal attraction. Studies suggest that all factors involve social reinforcement. The most frequently studied include physical attractiveness, propinquity (frequency of interaction), familiarity, similarity, complementarity, reciprocal liking, and reinforcement. The impact of familiarity, for example, is shown in the way physical proximity and interaction enhances cohesiveness, a social concept that facilitates communication and positive attitude towards a particular individual on account of similarities or the ability to satisfy important goals. Similarity is believed to more likely lead to liking and attraction than differences. Numerous studies have focused on the role of