Which of the following is a passive force that acts to encourage Na+ ions to enter resting neurons?
A) random motion, which tends to move ions down their concentration gradients
B) electrostatic pressure, which forces ions down their electrostatic gradients
C) sodium-potassium pumps, which distribute Na+ and K+ ions equally
D) both A and B
E) both A and C
Answer: D
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Sheriff (1936) asked groups of participants to estimate the distance moved by a point of light. He found that
a. participants were more accurate when they were alone than when they were in groups. b. participants were more accurate in groups than when they were alone. c. as the study progressed, the participants' estimates began to converge with each other. d. as the study progressed, the participants' estimates began to diverge from each other.
When a therapist selects "target behaviors," he or she means that such behaviors are being targeted for
a. discrimination. b. classical conditioning. c. experimentation. d. modification.
In Indonesia, 38% of the boys smoke cigarettes, and boys often feel, "If I don't smoke, I'm not a real man."
Indicate whether this statement is true or false.
The emotional cleansing that occurs when a person vents his emotions and feelings is called:
a. hypnosis b. free association c. catharsis d. transference