In Paul’s preschool classroom, children are encouraged to choose activities from a rich variety of materials designed to promote exploration. This preschool emphasizes the Piagetian principle of __________.

Calculate the pH of a solution that is 0.322 M in nitrous acid (HNO2) and 0.178 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 × 10-4.

The more alcohol a woman consumes during pregnancy, the __________.

Two-year-old Laura dropped a block into her toy box. She then dropped a cup, a car, and a doll—some gently, and some with force. Laura’s modification of her dropping scheme is an example of __________.

Dr. Hahn believes that language is etched into the structure of the brain. Dr. Hahn endorses the __________ perspective of language development.

Jamie’s twenty-third pair of chromosomes is XY. Jamie is __________.

Parents who discuss their childhoods with objectivity and balance, regardless of whether their experiences were positive or negative, tend to have __________ infants.

Which of the following is considered an external audience of a public relations activity?

Toby moved with his family just before he entered fourth grade, coming from third grade. In ecological systems theory, the move represents a change in Toby’s __________.

Coating the neural fibers with an insulating fatty sheath during the process of __________ improves the efficiency of message transfer.