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A large skull meant a large brain and high intellectual capacity, and a small skull indicated a small brain and decreased intellectual capacity. Morton collected hundreds of human skulls from all over the world. By studying these skulls he claimed that each race had a separate origin.
The Mismeasure of Man is a 1981 book by paleontologist Stephen Jay Gould.The book is both a history and critique of the statistical methods and cultural motivations underlying biological determinism, the belief that "the social and economic differences between human groups—primarily races, classes, and sexes—arise from inherited, inborn distinctions and that society, in this sense, is an ...
A definition of phrenology with chart from Webster's Academic Dictionary, c. 1895 Among the first to identify the brain as the major controlling center for the body were Hippocrates and his followers, inaugurating a major change in thinking from Egyptian , biblical and early Greek views, which based bodily primacy of control on the heart. [ 17 ]
In 2005 the journal Psychology, Public Policy and Law of the American Psychological Association (APA) published a review article by Rushton and Jensen, "Thirty Years of Research on Race Differences in Cognitive Ability". [170] The article was followed by a series of responses, some in support, some critical.
The gender difference in spatial ability was found to be attributed to morphological differences between male and female brains. The parietal lobe is a part of the brain that is recognized to be involved in spatial ability, especially in 2d- and 3d mental rotation.
A large skull meant a large brain and high intellectual capacity; a small skull indicated a small brain and decreased intellectual capacity. Modern science has since confirmed that there is a correlation between cranium size (measured in various ways) and intelligence as measured by IQ tests, although it is a weak correlation at about 0.2.
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The relationship between sex differences in the brain and human behavior is a subject of controversy in psychology and society at large. [118] [119] Many females tend to have a higher ratio of gray matter in the left hemisphere of the brain in comparison to males.