The human frontal cortex has been reported to be proportion-ally larger than in other primates. Magnetic resonance scans of humans, apes and monkeys now cast doubt on this idea. Semendeferi and ...

When they carefully plotted out the data, the researchers found that the human frontal lobes were just the size you would expect ... Their analysis found the frontal cortex did not evolve ...

which would drive natural selection for a big brain -- especially a large frontal cortex, the region responsible for advanced cognitive skills. This is the "social brain" hypothesis. Group size is ...

DURHAM, England, May 15 (UPI) -- Human intelligence can no longer be explained as just the evolutionary increase in the size of the brain's frontal lobes, British researchers say. A study by ...

Nevertheless, the human frontal cortex was not larger than expected for a primate brain of human size (Fig. 2). When the volume of the frontal cortex was regressed against the volume of the entire ...

A 90-year-old argument that humans conquered the planet thanks in part to the size of a key area of their brain has been mauled in a study that says Homo sapiens is no different from the great ...