Thursday, November 19, 2009

Universe in our own backyards

MindHacks discusses some recent papers on The illusion of a universe in our own back yard: . Among them:
"Science News covers a revealing new study on the Hadza people of Tanzania that has the potential shake up some of the rusty thinking in evolutionary psychology.

A common line of argument in this field is to suggest that sexual preferences for certain body types exist because we've evolved these desires to maximise our chances of mating with the most fertile or healthiest partner.

For example, studies have interpreted the fact that taller men are more likely to attract mates and reproduce in terms of evolutionary pressures on sexual desire. But most of these and similar studies have been completed on Western samples, while the authors draw conclusions about the 'universal' nature of these 'evolutionary' pressures.

To test how universal these body preferences really are, anthropologists Rebecca Sear and Frank Marlowe looked at whether similar preferences existed in the Hadza people, a hunter-gather tribe from Tanzania.

It turns out, these supposedly 'universal preferences' don't exist in the Hadza."
"The problems with relying on Western college students as participants in psychology studies is also addressed by a new paper just released by Behavioural and Brain Sciences which you can read online as a pdf.

The article reviews data from psychology experiments and argues that not only are college students a very restricted subset of society, but they are actually wildly atypical in comparison to the rest of the world's population.

In fact, the authors state that "The findings suggest that members of WEIRD [Western, Educated, Industrialized, Rich and Democratic] societies, including young children, are among the least representative populations one could find for generalizing about humans"."
Links in the MindHacks article.

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