Children in the stage of concrete operations have typically mastered what Piaget called "conservation."
a. true
b. false
Answer: a. true
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According to David Hume, even if all the observations scientists make are consistent with a conclusion, it is always possible that they will eventually make a new observation that violates this conclusion and proves it wrong. This is known as the problem of ________________
A) deduction B) induction C) reasoning D) observational scope
A patient comes to see Hippocrates, who determines that his problem is an elevated level of black bile. According to Hippocrates, this patient is most likely suffering from
a) panic disorder. b) melancholia. c) schizophrenia. d) general paresis.
Shaffer et al. (1987) studied medical doctors who had described themselves as "loners" in medical school and found that these loners
A) had less successful careers than non-loners. B) actually had more friends later in life than non-loners. C) had higher rates of cancer than non-loners. D) were less upset by stressful events than non-loners.
The optimal type of physical activity for someone wanting protection from osteoporosis is
A) ?high-impact exercise, like running and jumping. B) ?lower-impact exercise, like walking. C) ?low-impact exercise, like tai chi. D) ?no type of exercise.