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IQ: Difference between revisions
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Furthermore, IQ tests correlate imperfectly with latent general intelligence (leaving aside the arguments over the distinction between 'intelligence' and ''g''). A person who scores exceptionally high on one test is expected to regress substantially on another test on average, which also contributes to the error involved in the predictive validity of IQ on the individual level.<ref>http://miyaguchi.4sigma.org/gradytowers/societies.html</ref> Childhood ratio IQ scores are also different from adult deviation IQ scores (measuring mental development relative to age rather than mental ability relative to others) and often regress substantially with full cognitive development. In conclusion, many IQ tests administered are not broad tests but ones that only measure narrow abilities, and as well as being less accurate measures of ''g'', certain types of these lower-order sub-abilities may predict achievement in certain fields moreso than others. This is displayed in the phenomenon of 'ability tilt', where for example a person may have a high verbal IQ but a relatively mediocre non-verbal IQ and would thus be expected to do better in realms that rely more on verbal ability. | Furthermore, IQ tests correlate imperfectly with latent general intelligence (leaving aside the arguments over the distinction between 'intelligence' and ''g''). A person who scores exceptionally high on one test is expected to regress substantially on another test on average, which also contributes to the error involved in the predictive validity of IQ on the individual level.<ref>http://miyaguchi.4sigma.org/gradytowers/societies.html</ref> Childhood ratio IQ scores are also different from adult deviation IQ scores (measuring mental development relative to age rather than mental ability relative to others) and often regress substantially with full cognitive development. In conclusion, many IQ tests administered are not broad tests but ones that only measure narrow abilities, and as well as being less accurate measures of ''g'', certain types of these lower-order sub-abilities may predict achievement in certain fields moreso than others. This is displayed in the phenomenon of 'ability tilt', where for example a person may have a high verbal IQ but a relatively mediocre non-verbal IQ and would thus be expected to do better in realms that rely more on verbal ability. | ||
===Negative effects of low IQ=== | |||
It is important to note that low IQ is also associated with a bevy of negative life outcomes, which is also found in the dating realm. | |||
For example, even though high IQ individuals are more likely to be lifelong sexless, they are also more likely to be married rather than single past the age of 35, as the social scientist and conservative commentator Charles Murray discovered in a sample of White Americans.<ref>https://www.medrxiv.org/content/10.1101/2024.07.24.24310943v1</ref><ref>Murray, C., 2012. Coming Apart: The State of White America, 1960-2010. eBook ed. New York: Crown Forum, Crown Publishing Group, Random House, Inc. Available at: www.crownpublishing.com [Accessed 29 July 2024], (16:37).</ref> | |||
Part of the reason for this may be due to higher IQ promoting marital stability. Murray (?){{Citation needed|reason= I think the author of this graph is also Murray but I can't be bothered looking for the source ATM|date=July 2024}} found that, among White Americans, high IQ was associated with a lower risk of divorce, while higher parental SES predicted higher rates of divorce, which is interesting as IQ is correlated with parental SES.<ref>https://archive.is/JumOA</ref> | |||
This may be because higher IQ people are generally more prosocial, altruistic, honest, and have greater impulse control, all traits that positively predict marital stability. This provides evidence that while higher IQ is associated with a higher age of sexual onset, IQ is protective against marital dissolution, and is therefore associated with a greater quality of relationships, if not quantity, consistent with a slow-life history strategy. | |||
Another facet of low IQ that is harmful is its strong links to poor life outcomes. IQ is positively correlated with lifetime income and earnings, as well as academic and professional success.<ref>https://www.sciencedirect.com/science/article/abs/pii/S0160289606001127</ref><ref>https://www.tandfonline.com/doi/abs/10.1080/15427609.2014.936261</ref> | |||
Furthermore, several cross-cultural status promoting traits,<ref>https://pubmed.ncbi.nlm.nih.gov/32463270/</ref> such as intelligence (directly), leadership, educational and occupational prestige and success, sense of humor, task performance, and general knowledge (which is highly correlated with IQ) are all positively linked to IQ.<ref>https://pubmed.ncbi.nlm.nih.gov/32463270/</ref> | |||
This indicates that, in general, a certain level of IQ is needed to attain high social status, even for professions that are not popularly seen as linked to intelligence (such as entertainers). | |||
Status and income are traits that promote mating success, at least among men, and they likely also provide access to higher quality female partners. | |||
Thus, a lower IQ can significantly impede one's overall life quality and relationship success, especially when considered over an entire life span. | |||
== IQ and physical attractiveness== | == IQ and physical attractiveness== | ||
====Overview==== | ====Overview==== | ||