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Cousin marriage is an important topic in anthropology and alliance theory.
In fact, Mitchell's own data did not support his hypotheses and he later speculated that the dangers of consanguinity might be partly overcome by proper living.
Later studies by George Darwin found results that resemble those estimated today.
In some countries outside that region, it is uncommon but still legal.
In others, it is seen as incestuous and is legally prohibited: it is banned in China and Taiwan, North Korea, South Korea, the Philippines and 24 of the 50 United States.
Cousin marriage has often been chosen to keep cultural values intact, preserve family wealth, maintain geographic proximity, keep tradition, strengthen family ties, and maintain family structure or a closer relationship between the wife and her in-laws.
Many such marriages are arranged (see also pages on arranged marriage in the Indian subcontinent, arranged marriages in Pakistan, and arranged marriages in Japan).
Children of more distantly related cousins have less risk of genetic disorders.
In fact, a study of Icelandic records indicated that marriages between third or fourth cousins (people with common great-great- or great-great-great-grandparents) may produce the most children and grandchildren.
This study implicated cousin marriage as responsible for idiocy.
Within the next two decades, numerous reports (e.g., one from the Kentucky Deaf and Dumb Asylum) appeared with similar conclusions: that cousin marriage sometimes resulted in deafness, blindness, and idiocy.
The 19th-century academic debate on cousin marriage developed differently in Europe and America.Tags: Adult Dating, affair dating, sex dating