Older subjects and more physically attractive subjects exhibit weaker same-race preferences.
The same may be true of the tendency to marry someone of one's own race or religion.
Multiculturalism and integration Political borders are increasingly becoming irrelevant through globalisation and mass migration.
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Nobel Prize winner Gary Becker laid the foundations back in 1973 with his two-part article "A Theory of Marriage." Becker imagined society as an immense cocktail party with rational-minded daters searching for the most desirable partner who would have them.
His analysis predicted a pattern of "positive assortative matching," where men and women of similar desirability would partner with one another.
Some countries have experimented with multiculturalism (i.e.
a mosaic), while others perceive a “melting point” as the best means to integrate immigrants into society.
Another perspective is that newcomers function well within the greater society (without necessarily being absorbed into the dominant culture) — a good descriptive of this would be “harmonisation”.