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It was found that the group of men slightly outperformed the women in both the verbal-numerical reasoning and reaction time tests. Subsequently, the researchers tested to what extent the differences in performance was mediated by the varying attributes of the male and female brain (e.g. surface area) using two mixed sample groups.
Baron-Cohen's work in systemising-empathising led him to investigate whether higher levels of fetal testosterone explain the increased prevalence of autism spectrum disorders among males [36] in his theory known as the "extreme male brain" theory of autism. A review of his book The Essential Difference published in Nature in 2003 summarises his ...
Gregory wrote that the book was "very carefully written, with clear logical threads" and "the statement of a first-rate scientist on issues of personal and social importance". [11] Fausto-Sterling described The Sexual Brain as well-written and "potentially appropriate for classroom use." However, she found that LeVay's accounts of reproductive ...
The human brain. Differences in male and female brain size are relative to body size. [83] Early research into the differences between male and female brains showed that male brains are, on average, larger than female brains. This research was frequently cited to support the assertion that women are less intelligent than men.
In sum, some contemporaries cast serious doubt over LeVay's hypothesis that homosexual males have a "female hypothalamus" and that the key mechanism of differentiating the "male brain from originally female brain" is the epigenetic influence of testosterone during prenatal development. [15] [16]
Testing the Empathizing-Systemizing theory of sex differences and the Extreme Male Brain theory of autism in half a million people. Proceedings of the National Academy of Sciences, 115(48), 12152–12157.
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The "extreme male brain" or empathizing–systemizing theory views the autism spectrum as an extreme version of male-female differences regarding systemizing and empathizing abilities. [113] It's used to explain the possible reason why males with ASD score higher on systemizing tests than females with ASD. [114]