While observing people in a park you realize that many of the couples you see consist of couples that look alike.That is,you see a trend for couples that consist of two attractive people or two unattractive people.This phenomenon is called:

Question

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The matching principle refers to the tendency for people to choose partners who are similar to them in physical attractiveness and other traits. This is a common observation in many settings, including parks, and suggests that people are drawn to those who resemble themselves. Proximity, mere-exposure, and familiarity may also play a role in partner selection, but the matching principle specifically relates to similarities in appearance.

While Observing People in a Park You Realize That Many