Great, well written article on whether our brains are shrinking and the possible causes for this change. In the search for the answer, scientists reviewed evolutionary changes that have occurred over the past 50,000 years. The relation between body size and brain grey matter size are related, and impact each other. Whether technology has dumbed us down or not, it is fair to say we have domesticated ourselves in large numbers. Agriculturalists are beaming with this one. When you domesticate land mammals in large numbers, the level of aggression goes down, and with it, brain size decreases. Whether that’s happening to humans because of cities and larger towns is not clear, but the article explores this possibility and others with great detail.
A must read.