In a long - term study of 43 families, reported in the book Inside the Brain, researchers “found that children who were talked to the most [during their first three years of life] had strikingly higher IQs than children whose parents didn’t talk to them very much. ”
Uurinud pikka aega 43 perekonda, tõdesid teadlased raamatus „Inside the Brain ”, et„ lastel, kellega [nende kolme esimese eluaasta jooksul] oli räägitud kõige enam, oli märkimisväärselt kõrgem IQ kui lastel, kellega vanemad kuigi palju polnud rääkinud ”.