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== IQ and looks == | == IQ and looks == | ||
Studies have found a weak, but consistent, correlation between IQ and height, (around r = 0.2-0.3 depending on age when tested and type of ability measured).<ref>https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-016-0340-0#Sec15</ref> Different explanations for this correlation exist, ranging from superior childhood nutrition increasing both height and IQ,<ref>https://academic.oup.com/ije/article/34/3/678/682312</ref>assortative mating for both height and IQ leading to them being genetically linked,<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3044837/</ref> or even that taller people have greater cortical volume in the brain, leading to greater intelligence on average,<ref>https://link.springer.com/article/10.1007/s00429-018-1675-4</ref> or it may be explained by a general fitness factor due to assortative mating regarding fitness.<ref>https://www.gwern.net/docs/genetics/correlation/2019-conroybeam.pdf</ref> | Studies have found a weak, but consistent, correlation between IQ and height, (around r = 0.2-0.3 depending on age when tested and type of ability measured).<ref>https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-016-0340-0#Sec15</ref> Different explanations for this correlation exist, ranging from superior childhood nutrition increasing both height and IQ,<ref>https://academic.oup.com/ije/article/34/3/678/682312</ref> assortative mating for both height and IQ leading to them being genetically linked,<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3044837/</ref> or even that taller people have greater cortical volume in the brain, leading to greater intelligence on average,<ref>https://link.springer.com/article/10.1007/s00429-018-1675-4</ref> or it may be explained by a general fitness factor due to assortative mating regarding fitness.<ref>https://www.gwern.net/docs/genetics/correlation/2019-conroybeam.pdf</ref> | ||
However, a more recent meta study found no correlation and suggested studies that claimed otherwise suffered from [[halo effect]].<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4415372/</ref> | However, a more recent meta study found no correlation and suggested studies that claimed otherwise suffered from [[halo effect]].<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4415372/</ref> | ||