
Liberals think they’re more intelligent than conservatives because they are.
It is difficult to define a whole school of political ideology precisely, but one may reasonably define liberalism (as opposed to conservatism) in the contemporary United States as the genuine concern for the welfare of genetically unrelated others and the willingness to contribute larger proportions of private resources for the welfare of such others. In the modern political and economic context, this willingness usually translates into paying higher proportions of individual incomes in taxes toward the government and its social welfare programs. Liberals usually support such social welfare programs and higher taxes to finance them, and conservatives usually oppose them.
Defined as such, liberalism is evolutionarily novel. Humans (like other species) are evolutionarily designed to be altruistic toward their genetic kin, their friends and allies, and members of their deme (a group of intermarrying individuals) or ethnic group. They are not designed to be altruistic toward an indefinite number of complete strangers whom they are not likely ever to meet or interact with. This is largely because our ancestors lived in a small band of 50-150 genetically related individuals, and large cities and nations with thousands and millions of people are themselves evolutionarily novel.
The examination of the 10-volume compendium The Encyclopedia of World Cultures, which describes all human cultures known to anthropology (more than 1,500) in great detail, as well as extensive primary ethnographies of traditional societies, reveals that liberalism as defined above is absent in these traditional cultures. While sharing of resources, especially food, is quite common and often mandatory among hunter-gatherer tribes, and while trade with neighboring tribes often takes place, there is no evidence that people in contemporary hunter-gatherer bands freely share resources with members of other tribes.
Because all members of a hunter-gatherer tribe are genetic kin or at the very least friends and allies for life, sharing resources among them does not qualify as an expression of liberalism as defined above. Given its absence in the contemporary hunter-gatherer tribes, which are often used as modern-day analogs of our ancestral life, it may be reasonable to infer that sharing of resources with total strangers that one has never met or is not likely ever to meet – that is, liberalism – was not part of our ancestral life. Liberalism may therefore be evolutionarily novel, and the Hypothesis would predict that more intelligent individuals are more likely than less intelligent individuals to espouse liberalism as a value.
http://www.psychologytoday.com/blog/the-scientific-fundamentalist/201003/why-lib...
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