5 ms·

Yeah, as the other child comment says I'm not sure what you're getting at with speech acquisition. Here's a study I plucked: https://www.ncbi.nlm.nih.gov/pmc/ar

• bjourne 5y ago
  Here is a quote from the study: > However, for intelligence, heritability increases linearly, from (approximately) 20% in infancy to 40% in adolescence, and to 60% in adulthood. Some evidence suggests that heritability might increase to as much as 80% in later adulthood but then decline to about 60% after age 80. It does not corroborate the claim "Intelligence is largely (~70-80% of variance) inherited".
  • NoImmatureAdHom 5y ago
    That sounds right on the money to me? Variance in all traits is higher in childhood. The idea is that you grow into your mostly pre-determined self.
    • bjourne 5y ago
      No, it's not on the money. Do you really not see the numerical discrepancy?