By the age of 14 months, infants are masters of imitation. They mimic all sorts of behaviors, including laboratory antics such as touching one’s forehead to a box that then lights up.
Babies on the brink of toddlerhood are not indiscriminate copycats, however. They sometimes opt for simpler ways to do what an adult shows them, signaling a budding capacity for evaluating the sensibility of others’ behavior, according to a study in the Feb.
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