______ may be considered the brain’s primary neurotransmitter.
a. Serotonin
b. Dopamine
c. Glutamate
d. GABA
Ans: C
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If random samples, each with n = 9 scores, are selected from a normal population with µ = 80 and ? = 36, what is the expected value for the distribution of sample means?
a. 4 c. 16 b. 12 d. 80
You are watching a rat in a Skinner box, and every time a red light comes on, the rat presses the bar in the cage. However, when a green light comes on, the rat never presses the bar. In this case, it appears that the color of the light is acting as:
a. a positive reinforcer for bar pressing b. a negative reinforcer for bar pressing c. an unconditioned stimulus for bar pressing d. a discriminative stimulus for bar pressing
A study at a summer camp with two groups of 11-year-old boys, who called themselves the "Rattlers" and the "Eagles" was conducted by Sherif as an experiment on how
a. leaders emerge within groups. b. intergroup conflict can be reduced. c. aggression is learned. d. empathic-helping behaviors develop.
Domhoff argues that:
a. there is continuity between waking thoughts and dreams b. dreams tend to be totally independent from each other c. waking thoughts and dreams are unrelated d. dreams depend largely on the hindbrain