The thick band of neurons that connects the right and left cerebral hemispheres is called the __________.

In humans, prenatal hormone levels:

A) alter physical characteristics, but not postnatal behavior. B) alter postnatal behavior, but not physical characteristics. C) alter both physical characteristics and postnatal behaviors. D) alter neither physical characteristics nor postnatal behaviors.

Which of the following is true about swaddling?

a. It delays physical development in children because their arms and legs cannot move when they are swaddled. b. It is a relatively new technique to soothe babies. c. Pediatricians think it is cruel, but parents do it anyway. d. In some traditional cultures, babies are swaddled to a cradle board.