Whiting and Edwards (1988) studied children ages 2 to 10 in 12 different places around the world. Around what age were most children expected to stop breast-feeding, have less bodily contact with their mothers, have basic manners, and be toilet trained?

Which of the following demonstrates a major difference between the United States and the rest of the world in birthing practices?

A. In most of the world, hospital deliveries are the norm, while in the U.S. approximately 10 percent of babies are born in birthing centers. B. In the U.S. only 1 percent of births take place at home, while home births are much more common worldwide. C. The U.S. has more babies delivered by midwives than any other country. D. More cesarean sections are performed in the U.S. than in any other country.

If it were possible to know exactly what genetic information was contained in an individual's genes, would the field of behavioral genetics have any usefulness?

a. No b. Yes, because some genes are recessive c. Yes, because some traits are polygenic d. Yes, because the way traits are expressed is often dependent on the environment