In an experiment, the experimenter presented a pretest that consisted of two scenarios that the participants had to respond to. If the posttest was presented ten minutes later and the same two scenarios were presented, the participants might remember their responses to the pretest and simply indicate the same responses on the posttest. If this occurred, a _____ effect would be present in the experiment.
a. maturation c. treatment
b. testing d. history
Question 2
In a pretest posttest experiment, the participants take the pretest while the experimenter is out of sight. When the treatment is presented, the experimenter is present, though this is not part of the treatment. This creates a confound called a _____ effect.
a. testing c. history
b. maturation d. treatment
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