The article highlights the detrimental effects of malnutrition and financial stress on cognitive performance, asserting that poverty impacts intelligence. A study in Mauritius linked malnutrition to a 15-point drop in IQ, while U.S. research revealed that daily fast food consumption resulted in 20% lower academic performance. Financial insecurity also contributes, with studies showing that contemplating unexpected expenses can reduce IQ by 10-12 points due to stress and altered decision-making. This suggests that both biological factors and psychological stressors are key in understanding intelligence disparities.
Participants were asked to imagine an unexpected car repair bill—either $300 or $3,000. The larger hypothetical expense caused IQ scores to drop by 10-12 points.
Malnutrition at age 3 resulted in a staggering 15-point drop in IQ by age 11, showing that diet is a direct contributor to cognitive ability.
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