Leslie participated in a research study in which she was given a dose of Ritalin and reported to researchers that she found the effects pleasurable. Other participants given the same dose reported the effects were unpleasant
What did researchers find when they compared dopamine receptors in her brain to those who found the drug unpleasant?
a) Leslie had fewer dopamine receptors than other participants
b) Leslie had more dopamine receptors than other participants.
c) There was no difference in the numbers of dopamine receptors.
d) Only Leslie had dopamine receptors.
A
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Professor Chavez is teaching a large seminar class about the human nervous system, and decides to try an interactive demonstration. He asks one student, Marcia, to stand up and walk to the middle of the room. "Marcia is a neuron, everyone," Professor Chavez says. "How many of you would have to stand up and surround Marcia to reflect the number of glia cells that exist for every single neuron in the human nervous system?" The students will be correct when ________ students get up and stand around Marcia.
a. 25 b. 50 c. 100 d. 10
Hostility and optimism have ______ effects on health.
A. no B. identical C. similar D. opposite