While a large stroke can cause long-term damage, multiple small strokes
A. typically are no cause for concern.
B. are not predictive of later larger strokes.
C. can also produce significant damage.
D. do not produce true infarcts.
Answer: C
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What evidence argues against the idea that practicing music improves hearing? a. Highly practiced musicians have no better hearing than other people, on average. b. The ability to hear well is known to depend entirely on a single gene
c. Twins are similar in hearing, even if only one practiced music. d. Repetitive exposure to music is known to damage a person's hearing.
Construct validity is used when
a. a test can be validated against a single criterion. b. we cannot clearly define what we want to measure. c. we want to construct a new test for a specific purpose. d. we draw samples of items from some clearly defined.
The "restricted range problem" refers to the fact that _____
a. sometimes an experimenter just can't find a significant correlation between variables b. some correlations are always perfect regardless of how they are measured c. sampling only a narrow variety of values reduces the correlation obtained d. correlations can only be calculated for interval and ratio data
Alexander wants to know if he can do anything to reduce his risk of developing bipolar disorder, with which several family members have already been diagnosed. He asks you if taking omega-3 fatty acids could help. You advise him that
A. omega-3 fatty acids have not yet been tested in a controlled trial, so we don't know whether supplementation would have an effect. B. prevalence rates for bipolar disorder are actually highest in countries where fish is an important diet staple, and lowest where fish is rarely consumed. C. there is currently no plausible evidence that links omega-3 fatty acids to any effect on bipolar disorder, whether protective or harmful. D. attempts to improve symptoms in patients with bipolar disorder with omega-3 supplements have only produced weak results.