Which of the following is true of nicotine?
A. It relaxes the autonomic nervous system.
B. It increases respiration rate.
C. It reduces heart rate.
D. It arouses the skeletal muscles.
Answer: B
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The Diagnostic and Statistical Manual of Mental Disorders is:
a. now in its fifth edition b. rarely utilized in favor of the Psychological Diagnostic Categories (5th ed.) c. is responsible for describing only psychological problems d. is relatively small and is criticized as requiring much greater elaboration
At least 50% of adults aged 80 complete fluid and crystallized tests of intelligence and performance at rates similar to young people. This statement suggests _______
a. extensive variability within age groups b. that at least half of older adults have had increases in their IQ scores over time c. that at least half of younger adults have higher IQ scores than the older adults d. all of the above are suggested