Professor Matthews is carrying out a within-subjects experiment where she is administering to her participants a list of words to memorize and, in the second condition, after a 10mg dose of caffeine, she administers the same list of words to memorize
. She is worried that the sequence of the words on the list might interfere with her ability to interpret whether or not caffeine affects one's ability to memorize. Based on this description, it appears that Professor Matthews is concerned about a potential __________ in her research design.
a. order effect
b. independent variable
c. interrupted time-series
d. placebo effect
a
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A researcher wants to know whether a new drug reduces anxiety. Forty participants who suffer from anxiety disorder are assigned randomly to one of two groups. One group gets the new drug and the other group gets a placebo. Neither group knows which they receive. After 30 days on the drug, their anxiety levels are measured. In this experiment, is the independent variable and is the dependent
variable. a. anxiety, the new drug b. the new drug, the placebo c. anxiety, the placebo d. the new drug, anxiety
Which sequence should be followed to understand one’s coworkers?
a) predicting, testing hunches, observing b) observing, predicting, testing hunches c) observing, testing hunches, predicting d) testing hunches, observing, predicting