Which neurotransmitter normally activates muscles?
a. acetylcholine
b. serotonin
c. curare
d. histamine
A
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Beck argues that depression results from:
A. negative thoughts that distort our perceptions and interpretations B. a chemical imbalance in the brain C. unresolved conflicts between people D. unresolved unconscious conflicts regarding inappropriate sexual desires
Which statement regarding the study on facial recognition by showing participants faces of adults from various groups (i.e., African, Asian, and European descent) is most accurate? a. It was longitudinal
b. It was experimental. c. There were several ethical violations. d. Most of the participants were elderly.
A certain level of arousal is necessary for good performance
a. True b. False
One reason why brain functioning begins to change in middle adulthood is that __________.
A. middle-aged adults do not take good care of themselves, and it affects the health of their brains B. middle-aged adults carry greater loads of stress, which adversely affects their health C. researchers have found that 20 genes that are vital to learning, memory, and mental flexibility begin to function less efficiently as early as age 40 D. middle-aged adults are too busy to participate in mental learning and activities to maintain mental flexibility