
Back in 1995, a study by two child psychologists from the University of Kansas found that children whose parents were professionals were exposed to almost twice as many words as children in working class families; the latter in turn heard twice as many words as children in welfare families, the study noted.
In the ensuing years, much was made by governmental entities and developmental psychologists about exposing children, starting from birth, to a lot of words spoken by their parents and caregivers, which had been theorized by the study’s authors to be key to a child’s language acquisition and school success later on.
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