In males, testosterone may spur the growth of the right hemisphere and slows the growth of the left hemisphere

Between eighteen months and two years of age, toddlers start to

A) experiment with variegated babbling. B) produce two- and three-word sentences. C) use holophrases. D) use protowords.

Primary emotions are also known as ____

a. learned emotions b. secondary emotions c. basic emotions d. social emotions