The decline in mortality rates since the early 1900s is due to advances in medicine and sanitation.

The APA reports that it takes __________ beyond the bachelor's degree to obtain a Ph.D. in psychology

a) about 5 years b) about 4 years c) about 2 years d) about 6 years

Piaget believed that the exact timing of a stage reflects an interaction between the infant's __________ and __________

a) level of physical maturation; the experience of the environment b) level of physical maturation; the genetic predisposition of the child c) level of cognitive development; the environment in which the child is raised d) level of physical maturation; cognitive development of the child