The neurological basis for physical pleasure is an increase of the neurotransmitter _____ acting on the nucleus accumbens (which is part of the _____) to induce a pleasurable effect

Among American parents who are either married or living together and who have at least one child under the age of 18:

a. women spend more time on household labor. b. women and men spend the same amount to time on household labor. c. the total time spent on household labor, child care, and paid labor is much greater for men. d. the amount of time devoted to household labor, child care, and paid labor depends on where in the country the individuals live.

In one study, a saline injection was shown to be 70 percent as effective as morphine in reducing pain. This is an example of

a. a placebo effect. b. physiological blocking. c. the random-assignment effect. d. a double-blind effect.