The ability of stimulants to improve mental performance
A. has never been demonstrated in controlled studies.
B. is a myth—all the evidence shows that amphetamine and similar drugs impair performance.
C. is so clear that these drugs are routinely used to treat Alzheimer's dementia.
D. depends on the complexity of the task and the dose.
D
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The set-point theory has difficulty explaining ________
a. why most people who diet eventually gain the weight back. b. how the same daily caloric intake causes some to gain weight, but not others. c. the dramatic worldwide increases in the rates of overweight and obesity. d. the role of basal metabolism rates and fat cells in maintaining weight.
Select any obstacle(s) to love and intimacy:
A. low self-esteem B. lack of knowledge about love and relationships C. addictive and codependent behaviors D. all of the above