Tag Archives: Parent

The importance of environment on cognitive ability

11 May

Adoption is the closest thing we have to licensed parenting, in most jurisdictions a potential parent is screened by some agency before being allowed to adopt. In situations where one child is adopted and a sibling remains with the biological parent we have the conditions for a natural experiment – a test of the importance of effects of nurture on cognitive ability.

A study published this year analyses 436 such cases. From the paper:

“Individual differences in cognitive ability result from a complex admixture of genetic and environmental influences. Adopted children are one way to estimate the degree of malleability of cognitive ability in response to environmental change in the context of a scientific design that can control for genetic differences among individuals. Sibling pairs in which one member is adopted away and the other reared by biological parents are a particularly powerful research design. In a large population-based sample of separated siblings from Sweden, we demonstrate that adoption into improved socioeconomic circumstances is associated with a significant advantage in IQ at age 18. We replicate the finding in a parallel sample of half-siblings.”

 

England: Bedtime stories in decline

16 Sep

From the Guardian a disturbing story that claims that reading stories to children at bedtime is in decline in England:

“The survey also found that in previous generations, parents who read bedtime stories did so more regularly than their modern counterparts. Only 13% of respondents read a story to their children every night, but 75% recall being read to every night when they were kids. On average, today’s parents read bedtime stories to their children three times a week.

The findings are all the more surprising since 87% of those polled believe that bedtime reading is vital to children’s education and development.”

I wonder what a survey of North American parents would show?

As Risley and Hart have shown, children’s exposure to vocabulary has important long term consequences.

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