During which of Piaget's stages do children begin to express their internal experience in terms of symbols such as speaking?

Dora has no problem falling asleep each night, but she wakes up frequently in the middle of the night and often cannot fall back asleep. From what type of insomnia does Dora suffer?

a. ?maintenance insomnia b. ?duration insomnia c. ?continuance insomnia d. ?interval insomnia

Veronica gave birth to an undersized baby. She had high blood pressure after she entered the third trimester of her pregnancy. In this scenario, Veronica is most likely suffering from _____.

A. toxemia B. syphilis C. Tay-Sachs disease D. Phenylketonuria