Research ideas that present themselves in an unpredictable manner are

Between eighteen months and two years of age, children's vocabulary typically increases by a little more than

A) two hundred words. B) five hundred words. C) three hundred words. D) one hundred words.

Conduct disorder may arise from different developmental pathways, a concept known as ____

a. equifinality b. multifinality c. developmental diversity d. disordered beginnings