𝗔𝗿𝗰𝗵𝗮𝗻𝗴𝗲𝗹: Text replacement - "Jew" to "jew"

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	== See also ==		== See also ==
	*[[Effects of race mixing]]		*[[Effects of race mixing]]
	*[[~~Jewdar~~]]		*[[jewdar]]
	*[[~~Jewish~~ group evolutionary strategy]]		*[[jewish group evolutionary strategy]]
	*[[Racial genetic interests]]		*[[Racial genetic interests]]

𝗔𝗿𝗰𝗵𝗮𝗻𝗴𝗲𝗹: 1 revision imported

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en>Upplysning at 09:32, 22 March 2020

2020-03-22T09:32:16Z

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'''Genetic similarity theory''' refers to an argued genetically caused preference for and [[altruism]] towards other persons that are genetically similar.

== Description ==
Giving support to a person with similar genetics is argued to increase the probability of survival of a person's genes. The theory can be seen as an extension of the genetically caused preference for and altruism towards relatives (kin altruism).

The genetic similarity, or not, of another person is argued to be detected through several indirect methods, such as by noting similarities in appearance, behaviors, and attitudes.

The concept of "[[ethnic nepotism]]" has many similarities to genetic similarity theory and the two theories are often discussed together. One difference is that genetic similarity theory usually refers to effects on the individual level, while ethnic nepotism refers to effects on the group level.

== Empirical support ==
=== Animals ===
Animal studies on non-human species have found that individuals are able to detect genetic similarity in other individuals and modify behaviors based on this.<ref name=R2005>J. Philippe Rushton. Ethnic nationalism, evolutionary psychology and Genetic Similarity Nations and Nationalism 11 (4), 2005, 489–507. http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8129.2005.00216.x/abstract http://psychology.uwo.ca/faculty/rushtonpdfs/n&n%202005-1.pdf</ref>

=== Humans ===
Studies have found that more genetically similar persons (such as monozygotic twins vs. dizygotic twins) are more altruistic towards one another, express greater appreciation towards one another, and have more similar friends.<ref name=R2005/>

Studies using blood groups have found that friends and partners are more genetically similar than more random pairs.<ref name=R2005/>

Studies using manipulated photos have found that persons express greater trust, and for the opposite sex greater attraction, when the faces were more similar to the face of person being questioned (and this despite without consciously realizing this similarity).<ref name=R2005/>

Some characteristics are more heritable than other characteristics. A prediction of the genetic similarity theory is that friends and partners should show greater similarity on such highly heritable characteristics than on other characteristics. Studies have found support for this.<ref name=R2005/>

One study examined degree of grief among parents after the death of a child. They found that children perceived as more physically similar to their parents were grieved for more intensely than less similar children.<ref>Littlefield, C. H.; Rushton, J. P. (1986). "When a child dies: The sociobiology of bereavement". Journal of Personality and Social Psychology 51 (4): 797–802. doi:10.1037/0022-3514.51.4.797. https://www.ncbi.nlm.nih.gov/pubmed/3783426</ref>

== Criticisms ==
The theory (as well as the related concept of [[ethnic nepotism]]) has been criticized on the grounds that the genetic similarity between non-relatives is too small to cause evolutionary effects. This has been argued to be theoretically incorrect and the genetic similarity theory has as noted above been argued to be supported by many empirical studies.<ref name=R2005/><ref>Frank Saltera, Henry Harpendin. J.P. Rushton’s theory of ethnic nepotism. Personality and Individual Differences. https://www.sciencedirect.com/science/article/pii/S0191886912005569</ref>

== See also ==
*[[Effects of race mixing]]
*[[Jewdar]]
*[[Jewish group evolutionary strategy]]
*[[Racial genetic interests]]

== External links ==
*[https://www.amren.com/news/2009/04/the_seeds_of_co/ The Seeds of Conflict]

{{references}}

[[Category: Race]]

Genetic similarity theory - Revision history

𝗔𝗿𝗰𝗵𝗮𝗻𝗴𝗲𝗹: Text replacement - "Jew" to "jew"

𝗔𝗿𝗰𝗵𝗮𝗻𝗴𝗲𝗹: 1 revision imported

en>Upplysning at 09:32, 22 March 2020