research suggested that infants were capable of deferred imitation at an earlier age than Piaget theorized.

Piaget's cognitive developmental theory

Explanation:

Piaget's cognitive developmental theory suggested that infants were capable of deferred imitation at an earlier age than Piaget theorized. Jean Piaget proposed that deferred imitation developed in infants when they reached 16 to 24 months. As the age of an infant increases, so too does the length of time they are able to retain, and reproduce, specific actions.

the answer is a. adolescence

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