IQ
Coverage of IQ in the Nexus archive.
- Study highlights influence of socioeconomic status on children’s brain development
A study by Washington University School of Medicine found that socioeconomic status is the primary environmental factor influencing brain structure and function in children, surpassing factors like IQ, parenting style, or health history. The research analyzed brain scans of nearly 12,000 9- and 10-year-olds.
- Your DNA may predict your future success more than your upbringing
A new twin study suggests genes play a bigger role in future success than upbringing, with IQ strongly predicting education, career, and income. Genetic differences led to divergent life outcomes even among twins raised together. The findings imply life outcomes may be more hardwired than expected.
- From childhood to old age, fluoridated water has no negative effect on IQ or cognition, study finds
A study involving over 10,000 U.S. residents found no association between fluoridated water consumption and IQ or cognitive measures. The research suggests fluoridated water does not negatively impact intelligence or cognitive function across the lifespan.