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It is now recognized that there are no significant sex differences in average IQ, [1] [2] though performance in certain cognitive tasks varies somewhat between sexes. [3] [4] While some test batteries show slightly greater intelligence in males, others show slightly greater intelligence in females.
Kerala is home to 2.76% of India's population, and at 859 persons per km 2; [12] its land is three times as densely settled as the rest of India. Kerala's western coastal regions are the most densely settled with population of 2,022 persons per km 2, 2.5 times the overall population density of the state, 859 persons per km 2, leaving the eastern hills and mountains comparatively sparsely ...
For example, childhood exposure to lead — associated with homes in poorer areas [82] — correlates with an average IQ drop of 7 points, [83] and iodine deficiency causes a decline, on average, of 12 IQ points. [84] [85] Such impairments may sometimes be permanent, but in some cases they be partially or wholly compensated for by later growth.
Stressing the similarity of average IQ scores across racial groups in the Eyferth study, James Flynn, Richard E. Nisbett, Nathan Brody, and others have interpreted it as supporting the notion that IQ differences between whites and blacks observed in many other studies are mostly or wholly cultural or environmental in origin. [10]
(per 1000 births, under age 1, national average) Male to female sex ratio for India, based on its official census data, from 1941 through 2011. [91] The data suggest the existence of high sex ratios before and after the arrival of ultrasound-based prenatal care and sex screening technologies in India.
He is thus able to conclude that the IQ of these mixed race children is half way between that of Americans and Africans. He derives the same conclusion from the Weinberg, Scarr, and Waldman (1992) transracial adoption study since, at the 10-year follow-up, the mixed race children had an average IQ of 94, mid-way between the 102 of the white ...
The average fertility in his study was correlated at −0.031 with IQ for white women and −0.086 for black women. Vining argued that this indicated a drop in the genotypic average IQ of 1.6 points per generation for the white population, and 2.4 points per generation for the black population. [ 11 ]
The national average HDI for India in 2008 was 0.467. [1] By 2010, its average HDI had risen to 0.519. [2] [3] UNDP, the sponsor of the Human Development Index methodology since 1990, reported India's HDI to be 0.554 for 2012, [4] an 18% increase over its 2008 HDI. The United Nations declared India's HDI to be 0.586 in 2014, [5] a 5.77% ...