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In terms of trends, [[Intelligence testing|intelligence test scores]] (IQ test scores) are rising in many religious countries countries while in some irreligious countries, IQ scores are falling (see: [[Intelligence trends in religious countries and secular countries]]).  

In terms of trends, [[Intelligence testing|intelligence test scores]] (IQ test scores) are rising in many religious countries countries while in some irreligious countries, IQ scores are falling (see: [[Intelligence trends in religious countries and secular countries]]).  

[[Socioeconomics|Socioeconomic]] factors have an effect on intelligence.<ref>[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4641149/ Socioeconomic status and the growth of intelligence from infancy through adolescence] by Sophie von Stumma and Robert Plomin, Intelligence. 2015 Jan-Feb; 48: 30–36.</ref>

[[Socioeconomics|Socioeconomic]] factors have an effect on [[intelligence]].<ref>[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4641149/ Socioeconomic status and the growth of intelligence from infancy through adolescence] by Sophie von Stumma and Robert Plomin, Intelligence. 2015 Jan-Feb; 48: 30–36.</ref>

As a result, socioeconomic factors can cause differences in regional intelligence levels (for example, wealth which can affect the quality of education, health care and nutrition). Although social scientists have disputes about the accuracy of IQ scores in a given region, regions do vary in terms of their IQ scores.<ref name="CountryIQ">[https://iq-research.info/en/page/average-iq-by-country WORLD RANKING OF COUNTRIES BY THEIR AVERAGE]</ref><ref name="NatureIQ">[http://www.nature.com/hdy/journal/v92/n4/full/6800418a.html Book Review: IQ and the Wealth of Nations], ''Nature''</ref><ref name="AfricanIQ">[https://www.sciencedaily.com/releases/2010/01/100121155220.htm Controversial study of African IQ levels is 'deeply flawed'], Science Daily, January 21, 2010</ref> Ethnic groups facing discrimination as immigrants and their IQs temporarily dropping and then later rebounding when the discrimination is over, strongly suggests that IQ is significantly affected by one's environment and not due to any inherent and permanent genetic differences between races.<ref>[https://www.motherjones.com/kevin-drum/2017/05/charles-murray-still-convinced-whites-are-smarter-blacks Charles Murray Still Convinced That Whites Are Smarter Than Blacks] by Kevin Drum, ''Mother Jonees'', 2017</ref>

As a result, socioeconomic factors can cause differences in regional intelligence levels (for example, wealth which can affect the quality of education, health care and nutrition). Although social scientists have disputes about the accuracy of IQ scores in a given region, regions do vary in terms of their IQ scores.<ref name="CountryIQ">[https://iq-research.info/en/page/average-iq-by-country WORLD RANKING OF COUNTRIES BY THEIR AVERAGE]</ref><ref name="NatureIQ">[http://www.nature.com/hdy/journal/v92/n4/full/6800418a.html Book Review: IQ and the Wealth of Nations], ''Nature''</ref><ref name="AfricanIQ">[https://www.sciencedaily.com/releases/2010/01/100121155220.htm Controversial study of African IQ levels is 'deeply flawed'], Science Daily, January 21, 2010</ref> Ethnic groups facing discrimination as immigrants and their IQs temporarily dropping and then later rebounding when the discrimination is over, strongly suggests that IQ is significantly affected by one's environment and not due to any inherent and permanent genetic differences between races.<ref>[https://www.motherjones.com/kevin-drum/2017/05/charles-murray-still-convinced-whites-are-smarter-blacks Charles Murray Still Convinced That Whites Are Smarter Than Blacks] by Kevin Drum, ''Mother Jonees'', 2017</ref>