Couples who have lived together for a long enough time may start to look similar. Higher resemblance was also associated with greater reported marital happiness. One explanation of this is based on a theory of emotional efference, which suggests that emotional processes produce vascular changes. These changes are partly regulated by facial musculature.
Key Facts In This Video
Assortative mating refers to how people tend to couple with individuals who are similar in genetics, behavior, and appearance. 00:42
People born in the same geographical area are more likely to marry and share genetic markers. 01:11
Education level is at least partially tied to genetic makeup. 01:33
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