Leon, FR and Hassall, C orcid.org/0000-0002-3510-0728 (2017) UV radiation is associated with latitudinal trends in cognitive ability of White children in the USA. Journal of Individual Differences, 38 (3). pp. 155-162. ISSN 1614-0001
Abstract
Temperature, geo-residential pattern of subpopulations, prevalence of infectious diseases, and UV radiation have been proposed to explain the declining cognitive ability observed with proximity to the equator in the USA. This study tested the cognitive effects of the four variables. The results reveal that the latitudinal decline of cognitive ability is strongly correlated with the UV Index rather than with the other variables among White children. The decline in measured cognitive ability from north to south is absent among African American and Hispanic children, plausibly because the high levels of skin melanin among these ethnic groups, by absorbing and dissipating light, prevent the occurrence of radiation’s cognitive effects among these populations at USA latitudes. The possible physiological mediators (oxidative stress, folate degradation, sexual hormones) suggest diet, family planning, and educational methods as mitigating strategies; however, specific studies measuring the mediating variables are needed to confirm their role and further strengthen UV radiation as an explanatory concept.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | latitude; UV radiation; cognitive ability; USA; White children; African Americans and Hispanics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 Jan 2017 16:41 |
Last Modified: | 30 Jan 2019 13:56 |
Status: | Published |
Publisher: | Hogrefe |
Identification Number: | 10.1027/1614-0001/a000232 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:110982 |