Hart and Risley Demonstrated the Impact of the Environment on Language

Multiple Choice

Hart and Risley demonstrated the impact of the environment on language acquisition. Their research found which of the following to be true by the age of three for the children they studied?

A) Children of working-class parents heard ten million words.
B) Children of parents on welfare heard twenty million words.
C) Children of professional parents heard thirty million words.
D) The differences did not appear to have an impact on later language development.