If Maggie's difficulties are viewed as behaviors seen in other children her age, but as more frequent, intense, and detrimental to her development, then her behaviors are seen as dimensional

Dr. Wilkins randomly assigns subjects to one of two groups. He is interested in the effects of caffeine on anxiety levels. He gives subjects in the first group an extra two cups of coffee a day for six months

The second group receives an extra two cups of decaffeinated coffee a day for the same time period. Importantly, subjects do not know whether they are being given regular or decaffeinated coffee. By providing one group with decaffeinated coffee, Dr. Wilkins is trying to account for which potential element of the experiment? A) participant fraud B) inter-rater reliability C) the placebo effect D) variability

The text suggests the main reason why low-income Latinos live longer than expected is that they:

A) exercise more. B) live in supportive, nurturing communities. C) have lower diabetes rates. D) work at more physically demanding jobs.