Four types of similarity are most important:
1) Demographic (age, education, race, religion, height, level of intelligence)
· Studies show that people tend to be more attracted to others of the same race
2) Attitudes (opinions, interests and values)
· In a study where an attitude survey was taken, participants liked the other person better when they perceived his or her attitudes as being similar to theirs
· People tend to marry others who share their political attitudes, religiosity, and values but who did not necessarily start out having similar personalities
· One study found that similarity was unrelated to the length of relationship
· Milton Rosenbaum - Similarity does not spark attraction, rather dissimilarity triggers repulsion, the desire to avoid someone
· We avoid associating ingroup with those who are dissimilar, and then by those who remain, we are drawn to those most similar.
3) Mismatches
· Matching Hypothesis: the idea that people tend to become involved romantically with others who are equivalent in their physical attractiveness
· Online dating - Men and women tended to initiate and receive contact from others whose relative popularity on the site was similar to their own
4) Similarity in subjective experience
· Whenever two people who are at a common event laugh, cry, jump to their feet, cheer, shake their heads at the same time, they feel as if they have shared a subjective experience
· Elizabeth Pinel called this “I-Sharing” and theorized that people who I-share, even if they are otherwise dissimilar, feel a profound sense of connection to one another like “kindred spirits”