➡ From Child Welfare Information Gateway NJ:
China: Children living with their parents have more high IQ Levels – Baltimore Tech Time
Albany Daily Star – August 06, 2016
Children who live far from their parents for long periods as they grow up are likely to have a lower IQ than those who live with mum and dad, a study suggests. It found that the brains of youngsters left without direct parental care for more than six months mature at a slower rate, with a detrimental impact on intelligence.