The fact that a person with phenylketonuria can essentially mute the effects of their disease by controlling their dietary intake of a specific amino acid is an example of which of the following principles?

a. Heredity and the environment interact dynamically throughout development.
b. Genes can influence the environment to which a person is exposed

In many respects, Allen Funt's old television show, Candid Camera, is similar to observational research in social psychology. In what crucial respect is Candid Camera most different from observational research?

A) The people Funt filmed did not provide informed consent. B) The kind of situations that Funt filmed are not relevant to social psychologists. C) Funt intentionally manipulated the situations. D) Funt's observations were not conducted in a controlled, scientific manner. E) Funt did not use a random sample of people who confronted strange situations.

The deer waits motionlessly, hidden in the thicket as the band of hunters approach. As they get closer, their dogs bark, picking up the scent of their prey

In a futile effort to escape, the deer bolts. Which of the following most accurately describes the nervous system of the hunted deer at this point? a. Its sympathetic nerve fibers are more active than its parasympathetic nerve fibers. b. Its parasympathetic nerve fibers are more active than its sympathetic nerve fibers. c. Both its sympathetic and parasympathetic nerve fibers are equally active. d. Neither its sympathetic nor its parasympathetic nerve fibers are aroused.