A psychologist blindfolds a subject and then places the subject's hand into a dish of water. The psychologist asks the subject to report whether his hand feels colder or warmer than before being placed in the water. Which psychologist was most likely to have conducted this study?

The three layers of the inner cell mass develops into

a. different parts of the body of the embryo b. the fetus, the zygote, and the embryo c. the embryo, the placenta, and the umbilical cord d. different parts of the neural tube

Core knowledge theorists disagree with Piaget's ideas and argue that

A) infants begin life with innate, special-purpose knowledge systems. B) cognitive development originates with sensorimotor reflexes. C) development occurs in stages with little variations across domains. D) development is primarily a matter of cultural and social influences.