The neurotransmitter __________ is thought to play a significant role in the brain reward system that is involved in the learning processes of both humans and animals.
A. serotonin
B. glutamate
C. gamma-aminobutyric acid (GABA)
D. dopamine
Answer: D
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Which term refers to prejudice and discrimination directed at older people?
A. grayism B. senility C. frailism D. ageism
By traditional definition, how many of the following 16-year-old children could be classified as "intellectually disabled" (Note: all IQ scores based on Stanford-Binet test results.): Kirk, IQ ? 120; McCoy, IQ ? 100; Chekhov, IQ ? 80; Sulu, IQ ? 60?
a. one b. two c. three d. four
When people perceive themselves as being threatened, oxytocin ____.
A. increases their attention to possible dangers B. decreases their attention to possible dangers C. calms them down D. helps them better analyze the situation
In multielement designs, potentially confounding variables are:
a. carryover effects. b. selection effects. c. both carryover and selection effects. d. selection-maturation interaction effects.