Trusted, Automoderated users
17,538
edits
IQ: Difference between revisions
Jump to navigation
Jump to search
no edit summary
No edit summary |
No edit summary |
||
| Line 16: | Line 16: | ||
There is, however, also evidence for assortative mating in terms of intelligence (like attracting like). This had lead to speculation that this assortative mating will lead to lower social mobility among the less intelligent,<ref>https://www.sciencedirect.com/science/article/abs/pii/S0191886913006399</ref> perhaps even leading to caste systems based on IQ forming.<ref>https://westhunt.wordpress.com/2012/01/13/class-caste-and-genes/</ref> However, some have said these claims have never been substantiated.{{citation needed}} | There is, however, also evidence for assortative mating in terms of intelligence (like attracting like). This had lead to speculation that this assortative mating will lead to lower social mobility among the less intelligent,<ref>https://www.sciencedirect.com/science/article/abs/pii/S0191886913006399</ref> perhaps even leading to caste systems based on IQ forming.<ref>https://westhunt.wordpress.com/2012/01/13/class-caste-and-genes/</ref> However, some have said these claims have never been substantiated.{{citation needed}} | ||
A study conducted by Halpern et. al (2000) that used a total sample of N = 11,696 adolescents from two longitudinal surveys of adolescent health and sexual behavior, measured the IQs of participants using a simple and equivalent measure of IQ—The Peabody Picture Vocabulary Test Revised (PPVT–R)—which has a correlation of .64 with the Wechsler Intelligence Scale for Children, indicating that the test is a good measure of general intelligence. | A study conducted by Halpern et. al (2000) that used a total sample of N = 11,696 adolescents from two longitudinal surveys of adolescent health and sexual behavior, measured the IQs of participants using a simple and equivalent measure of IQ—The Peabody Picture Vocabulary Test Revised (PPVT–R)—which has a correlation of .64 with the Wechsler Intelligence Scale for Children, indicating that the test is a good measure of general intelligence. | ||
| Line 26: | Line 25: | ||
== 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> | |||
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> | |||
== References == | == References == | ||