A researcher was investigating the link between memory and caffeine. Half the participants were given a caffeinated beverage before being asked to memorize a word list; the other participants were given a decaffeinated beverage before being asked to memorize the same word list. In this research study, the decaffeinated beverage would be:
a. a placebo
b. a confounding variable
c. the dependent variable
d. an inferential variable
A
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The impact of being a child of divorced parents often persists into adulthood and includes the greater likelihood of a. never marrying
b. marrying at a young age. c. being less satisfied with life. d. being more optimistic about marriage.
The virtue of wisdom has been found to . . .
a. Increase stress because the person is more aware of what can go wrong b. Help individuals be more creative, which, in turn, helps them decrease their stress c. Be too vague to help with understanding stress d. None of the above
Regarding brain cells regeneration and repair, which of the following statements is FALSE?
a. Saltatory conduction is the approach in which a patient's good arm is restrained in order to force his or her impaired arm to be more active with a resulting increase in neurogenesis in the damaged part of the brain. b. Approaches involving neurogenesis are offering hope for persons suffering from a variety of disabilities, including blindness and Parkinson's disease. c. A healthy 75-year-old brain has just as many neurons as it did when it was 25-year-old. d. Although the brain loses cells daily, it simultaneously grows new neurons to replace them.
A person suffering from hyperthyroidism will tend to
a. be thin, tense, excitable, and nervous. b. exhibit inactivity, sleepiness, slowness, obesity, and depression. c. have a powerful craving for the taste of salt. d. have enlarged arms, hands, feet, and facial bones.