Curare, a poison, works by blocking receptor sites for ______

In regards to handedness, adopted children show a greater resemblance to ____

a. their biological parents b. their adoptive parents c. their biological siblings d. their adoptive siblings

Efforts to generalize about children's first spoken words have shown that

a. there is little variation across different children b. regardless of the language, nouns appear before verbs c. across cultures, parents differ in the words and phrases that they encourage their children to learn first d. bilingual children usually acquire nouns in one language and verbs in their second language