Chemical substances in the nervous system that are similar in structure and in action to opiates—such as heroin and morphine—are ________
a. hormones.
b. endorphins.
c. androgens.
d. neurotransmitters.
Answer: b
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What did Masters and Johnson confirm that physicians had previously ignored or doubted? a. Many women can have multiple orgasms
b. Vaginal orgasms are more mature than clitoral orgasms. c. Both men and women produce both testosterone and estradiol. d. Genetic differences are responsible for differences in sexual orientation.
Dr. Faber explained to her students that holding a pen between their teeth would make them feel happier. What is the main reason for this phenomenon?
A) Holding a pen between your teeth sends emotion signals to the pleasure centre in the brain. B) Holding a pen between your teeth contracts the muscles of the face in the same way as a smile. C) Feeling silly with a pen in your mouth causes you to feel happier. D) Seeing others' reactions to the pen in your mouth causes you to feel happier.
When a child appreciates that other people have their own unique ideas, perceptions, or emotions, then ____ has been overcome
a. egocentrism b. scaffolding c. horizontal decalage d. representational insight
In which stage of Piaget's theory of moral development do children first understand that families and societies must live by rules?
a. the stage of moral realism c. the premoral stage b. the stage of moral relativism d. the stage of moral absolutism