assortative

If the deviation of the chosen character is in the same direction (plus or minus) as in the chooser, the mating is called assortative; if in one direction independent of the characteristic of the chooser, it is called preferential.

Applied Eugenics Paul Popenoe 1933

What it does mean is that like tends to mate with like -- called assortative mating.

Applied Eugenics Paul Popenoe 1933

A rise in singe-parent families keeps some households locked in poverty, they say, while a phenomenon called assortative mating - in which men and women increasingly look for partners from similar social classes, rather than marrying above or below their station - has tightened the ranks of the wealthy.

NYT > Home Page By ERIC PFANNER 2012

There was also in all countries a rise in the phenomenon known as "assortative mating", that is to say people with higher earnings having their spouses in the same earnings bracket - e.g. doctors marrying doctors rather than nurses.

BusinessWeek.com -- Top News 2011

Many models relax some of these assumptions, allowing for phenomena such as assortative mating, discrete sub-populations with migration, self-fertilization, and sex-ratio distortion.

ScienceBlogs Channel : Life Science Coturnix none@example.com 2010

Many models relax some of these assumptions, allowing for phenomena such as assortative mating, discrete sub-populations with migration, self-fertilization, and sex-ratio distortion.

ScienceBlogs Channel : Life Science 2010

Not only is IQ becoming more crucial to economic success but observable phenomena such as assortative mating for IQ that Western partners’ IQs are shown to be positively correlated are likely to lead to an increasing spread of IQs within populations.

Reality Re Income Inequality Praguetory 2006

Not only is IQ becoming more crucial to economic success but observable phenomena such as assortative mating for IQ that Western partners’ IQs are shown to be positively correlated are likely to lead to an increasing spread of IQs within populations.

Archive 2006-11-01 Praguetory 2006

This study clearly puts in perspective the rather modest role of genetics, as Mendelian genetics, cannot explain this sex-assortative association.

Dr. Sharma’s Obesity Notes » Blog Archive » Prevent Childhood Obesity - Treat the Parents! 2009

Perez-Pastor and colleagues from the Peninsula Medical School, Plymouth, UK, examined the relationship between same-sex (gender assortative) association of BMI in 226 healthy trios (mother, father and child) from a randomly selected 1995 to 1996 birth cohort prospectively studied from 5 to 8 years (International Journal of Obesity).

Dr. Sharma’s Obesity Notes » Blog Archive » Prevent Childhood Obesity - Treat the Parents! 2009