When it comes to the similarity attraction effect, people tend to be attracted to those who are most like themselves. Research shows that people are more likely to view someone as attractive as either a potential friend or a romantic partner if both are similar in their attitudes, economic background, personality, religion, social background and activities.

This allows me to understand why certain people are attracted to others. If you look at a couple, they have many similarities, most often their 'attractiveness' is around the same level. For example, in Hollywood, these beautiful people are always seen with very attractive partners. They also tend to have the same econmoic background, same attitudes and same social backgroud.