We Have Got Human Intelligence All Wrong?

We Have Got Human Intelligence All Wrong?

While scientists can’t agree on a single definition of “intelligence,” they generally concur that humans are the most intelligent living creature on Earth. However, it is certainly not due to possessing a 3 pounds brain, as a sperm whale has a brain that weighs about 17 pounds. On the other hand, some relatively “smart” animals have small brains – for example, a beagle’s brain is about 2.5 ounces, and an orangutan’s is about 13 ounces. Perhaps it has to do with the different components of the brain. Humans have the largest cerebral cortex of all mammals, relative to the size of their brains. This area houses the cerebral hemispheres, which are responsible for higher functions like memory, communication and thinking. This article explores these related ideas.

Brain from four different views using color-coding to show the anatomy and functional areas.  Labels for the cerebral cortex, cerebellum, brainstem, frontal lobes, temporal lobes, parietal lobes, occipital lobes and pituitary gland.  To the left are color-code keys depicting functional areas for vision, association, motor function, Broca's speech, hearing, emotions, sensation, smell, written language, cognition and base motor functions like balance, equilibrium and posture. --- Image by © Visuals Unlimited/Corbis
Brain from four different views using colour-coding to show the anatomy and functional areas. Labels for the cerebral cortex, cerebellum, brainstem, frontal lobes, temporal lobes, parietal lobes, occipital lobes and pituitary gland. To the left are colour-code keys depicting functional areas for vision, association, motor function, Broca’s speech, hearing, emotions, sensation, smell, written language, cognition and base motor functions like balance, equilibrium and posture. Image by © Visuals Unlimited/Corbis

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http://www.bbc.com/future/story/20161108-weve-got-human-intelligence-all-wrong