Does IQ Influence the Wealth of
                                                  Nations?

Lynn, Richard; Vanhanen, Tatu

doi:10.1037/041316

Cited by 66 publications

(109 citation statements)

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“…Differences in cognitive and language scaled scores were present between our AA and EA children. IQ scores favoring EA over AA have been documented [ 49 , 50 , 51 , 52 , 53 ]. Our 1-point difference in scaled score between AA and EA is equivalent to that reported by other groups [ 51 , 54 ].…”

Section: Discussionmentioning

confidence: 99%

Gestational Vitamin 25(OH)D Status as a Risk Factor for Receptive Language Development: A 24-Month, Longitudinal, Observational Study

et al. 2015

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Emerging data suggest that vitamin D status during childhood and adolescence can affect neurocognitive development. The purpose of this study was to investigate whether gestational 25(OH)D status is associated with early childhood cognitive and receptive language development. The Conditions Affecting Neurocognitive Development and Learning in Early Childhood Study (CANDLE) study enrolled 1503 mother-child dyads during the second trimester of healthy singleton pregnancies from Shelby County TN. Among 1020 participants of the total CANDLE cohort for whom 25(OH)D levels were available, mean gestational 25(OH)D level during the second trimester was 22.3 ng/mL (range 5.9–68.4), with 41.7% of values <20 ng/dL. Cognitive and language scaled scores increased in a stair-step manner as gestational 25(OH)D levels in the second trimester rose from <20 ng/dL, through 20–29.99 ng/dL, to ≥30 ng/dL. When controlling for socioeconomic status, race, use of tobacco products, gestational age of the child at birth, and age at the 2-year assessment, the gestational 25(OH)D was positively related to receptive language development (p < 0.017), but not cognitive or expressive language.

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Section: Discussionmentioning

confidence: 99%

Gestational Vitamin 25(OH)D Status as a Risk Factor for Receptive Language Development: A 24-Month, Longitudinal, Observational Study

et al. 2015

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“…39 Moreover, IQ has been found to be a consistent predictor of resilience to PTS, 40 above and beyond the variance accounted for by combat exposure. 41 In other words, reviews of the empirical literature conclude “IQ is negatively correlated with the development of PTSD symptoms.” 36(p1043) Given that IQ represents a strong predictor of future educational and academic achievement, 42–44 it is plausible that our sample (and subsequent findings) suffer from selection effect. Since lower levels of educational achievement have previously been shown to predict PTS symptoms among military veterans, 45 it could be that student service members/veterans are somewhat protected from PTSD due to their presumed higher intelligence, than military personnel not pursuing a post-secondary degree.…”

Section: Commentmentioning

confidence: 94%

Implications of Posttraumatic Stress Among Military-Affiliated and Civilian Students

Barry

Whiteman

Wadsworth

2012

Journal of American College Health

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Objectives Determine whether posttraumatic stress symptoms (PTS) are associated with problem drinking and alcohol-related consequences, as well as academic correlates among military-affiliated and civilian students. Participants Final sample (n = 248) included 78 combat exposed student service members/veterans, 53 non-combat exposed student service members/veterans, 38 ROTC students, and 79 civilian students. Method Self-report data was collected spring 2011 via a web-based survey measuring PTS, problem drinking, alcohol-related consequences, GPA, educational self-efficacy, academic amotivation and persistence. Results Military students exposed to combat-related trauma reported significantly greater PTS symptoms than other military and civilian groups. PTS symptoms were associated with problem drinking and alcohol-related consequences for all groups, yet unrelated to academic correlates among those exposed to combat-related trauma. Conclusions This study adds to the scant literature base exploring the unique characteristics of student service members/veterans in higher education.

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“…Moreover, on a worldwide basis, a meta-analysis conducted by Lynn and Vanhanen (2002) shows that on average individuals with a higher IQ are East Asians with 105 points, followed by Europeans with 99, Inuit or Eskimo with 91, Amerindians and people of Southeast Asia with 87, the inhabitants of Pacific islands with 85, North African residents with 84, sub-Saharan Africans with 67, Australian aborigines with 62, and the bushmen with 54.…”

Section: Brain Size Intelligence and Ethnic Groupsmentioning

confidence: 99%

External measures of cognition

Cairó¹

2011

Front. Hum. Neurosci.

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The human brain is undoubtedly the most impressive, complex, and intricate organ that has evolved over time. It is also probably the least understood, and for that reason, the one that is currently attracting the most attention. In fact, the number of comparative analyses that focus on the evolution of brain size in Homo sapiens and other species has increased dramatically in recent years. In neuroscience, no other issue has generated so much interest and been the topic of so many heated debates as the difference in brain size between socially defined population groups, both its connotations and implications. For over a century, external measures of cognition have been related to intelligence. However, it is still unclear whether these measures actually correspond to cognitive abilities. In summary, this paper must be reviewed with this premise in mind.

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Does IQ Influence the Wealth of Nations?

Cited by 66 publications

References 0 publications

Gestational Vitamin 25(OH)D Status as a Risk Factor for Receptive Language Development: A 24-Month, Longitudinal, Observational Study

Gestational Vitamin 25(OH)D Status as a Risk Factor for Receptive Language Development: A 24-Month, Longitudinal, Observational Study

Implications of Posttraumatic Stress Among Military-Affiliated and Civilian Students

External measures of cognition

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