For what purposedo researchers think that infant-directed speech developed?
What will be an ideal response?
It is thought that it developed in smaller, nuclear families in developed countries because infants were not exposed to a variety of adults in their culture speaking to them. This way, parents could communicate the basic structure of the language they would soon hear when they are outside of the home.
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a. obedience. b. coercion. c. compliance. d. group conformity.