Search results
Results from the WOW.Com Content Network
The variability hypothesis, also known as the greater male variability hypothesis, is the hypothesis that males generally display greater variability in traits than females do. It has often been discussed in relation to human cognitive ability , where some studies appear to show that males are more likely than females to have either very high ...
The authors note that greater male variability is not ubiquitous, and ratios less than 1.0 have been reported in some national and international data sets. [10] A review by Hyde et al. (2009) also evaluated the topic of greater male variability in mathematics performance. [11]
He concluded, "No evidence was found for sex differences in the mean level of g. Males, on average, excel on some factors; females on others". Jensen's results that no overall sex differences existed for g has been strengthened by researchers who assessed this issue with a battery of 42 mental ability tests and found no overall sex difference. [75]
In some conditions, men's productivity is higher (for example, when "male" objects are used), in other conditions, women's productivity may be higher or there are no differences between the sexes. [54] Higher female ability in visual recognition of objects and shapes have also been found. [55] [56]
A 2017 review of amygdala volume studies found that there was a raw size difference, with males having a 10% larger amygdala, however, because male brains are larger, this finding was found to be misleading. After normalizing for brain size, there was no significant difference in size of the amygdala across sex. [26]
In some species, there is evidence of male dimorphism, but it appears to be for distinctions of roles. This is seen in the bee species Macrotera portalis in which there is a small-headed morph, capable of flight, and large-headed morph, incapable of flight, for males. [32] Anthidium manicatum also displays male-biased sexual dimorphism.
A display showing images of Alon, Oren, and Tal Alexander prior to a news conference in New York on Wednesday, Dec. 11, 2024. ... She said the evidence is strong, adding that the men pose a danger ...
"Of the 80 disorders diagnosed in adulthood for which sex ratios are provided, 35 are said to be more common in men than in women (17 of which are substance related or a paraphilia), 31 are said to be more common in women than men, and 14 are said to be equally common in both sexes." [26] Differences in male and female jealousy can also be ...