Race Differences in Intelligence; An Evolutionary Analysis by Richard Lynn

Author:Richard Lynn [Lynn, Richard]
Language: eng
Format: epub
Publisher: Washington Summit Publishers
Published: 2017-09-26T04:00:00+00:00

2. Cognitive Demands in Northern Latitudes

The selection pressure for enhanced intelligence acting on the peoples who migrated from tropical and sub-tropical equatorial Africa into North Africa, Asia, Europe, and America was principally the problem of survival during the winter and spring in temperate and cold climates. The new niche of the temperate and cold environments colonized by the peoples that migrated out of Africa demanded an adaptation from an herbivorous to a largely carnivorous life style. This was a new and more cognitively demanding environment because, as described by Clive Gamble,

plant foods are often available only during short seasons . . . [and] . . . compared to warmer environments there would have been fewer edible plant species, and a concomitant requirement for increased reliance on animals . . . and the obvious problem of keeping warm, including the likely necessity of controlling and even making fire. (Gamble, 1993, p. 117)

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.