An Experiment Examined Whether Giving Children Recess Prior to Testing

Multiple Choice

An experiment examined whether giving children recess prior to testing helped their test performance. For one of the semesters, the researcher sends half of the classes out for 10 minutes of recess prior to testing. For the other half, he provides 10 minutes of free time after the test. The students in the non recess condition decided they would try harder on the tests because they did not go to recess. This is an example of a(n)

A) Experimenter threat.
B) John Henry effect.
C) Placebo effect.
D) Hawthorne effect.