Before collecting data, an experimenter wants to verify that people will believe that a film clip is pleasurable rather than upsetting to watch. He pilot tests the clip on a group of people and assesses their responses. He has used a:

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The Answer of Before collecting data, an experimenter wants to verify that people will believe that a film clip is pleasurable rather than upsetting to watch. He pilot tests the clip on a group of people and assesses their responses. He has used a:

Before Collecting Data, an Experimenter Wants to Verify That People