At Folger University, Drs. Chase and Sanborn are conducting an experiment on the effects of caffeine on memory. Participants are randomly assigned to a caffeine or a no-caffeine group; later, their recall of items on a word list is assessed. In which answer does the pair correctly identify a variable in this experiment?
a. caffeine—dependent variable
b. word recall—experimental variable
c. caffeine—independent variable
d. word recall—independent variable
Ans: C
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A. pit bull B. primary abuser C. cobra D. sociopath
If people with Down syndrome live long enough, they almost invariably develop ____.
A. Korsakoff's syndrome B. Parkinson's disease C. Huntington's disease D. Alzheimer's disease