Brain Study Casts Doubt on Theory of How Human Intelligence Evolved

“According to a popular view of human cognitive capabilities, much of what sets our species apart from the other primates can be attributed to a disproportionate enlargement of a part of the brain known as the frontal cortex that occurred at some point in human evolution. But the evidence traditionally used to support that argument, say Katerina Semendeferi of the University of California at San Diego and her colleagues, comes from small studies that in many cases did not include data from apes, our closest relatives. Furthermore, the studies varied in the way they defined the region of the cortex.” Scientific American