exam3_practice_solutions.pdf

# Mark decides to conduct a conceptual replication

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37. Mark decides to conduct a conceptual replication. Which of the following could be in the study to make it this type of replication? a. Measuring a different group of participants b. Having participants drink a caffeinated energy drink rather than a caffeinated cola c. Measuring the same participants one week later d. Having participants complete 10 math problems instead of 15 38. When generalizing the results of a sample to a population, which of the following is the most important question to ask? a. Where were the participants tested? b. How many participants were in the sample? c. How were the participants sampled? d. Do the participants come from the “real world”? 39. What does it mean when a study cannot be replicated by an independent researcher? 40. What is the problem with WEIRD samples?

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RESEARCH STUDY 12.3 To study the effects of physical discomfort on attention, Dr. Lopez conducted the following study: A group of participants were required to keep one hand submerged in cold water (52 degrees). Half of the participants kept their hand in the water for two minutes, and half of the participants kept their hand in the water for four minutes. In addition, half of the participants were given a placebo pill and told it would reduce the pain of the water (pain relief assumed). The other half were given a placebo pill and told that it would have no effect (no pain relief assumed). While their hands were in the water, participants were asked to watch a video where a ball is quickly passed between and underneath three cups. At the end of the video, participants were asked to indicate under which cup the ball could be found. Whether or not the participant picked the correct cup was recorded (as a measure of whether they were paying attention). The results are below. Duration 2 Minutes 4 Minutes Pain relief expectation Expecting to experience pain relief 32 18 Not expecting to experience pain relief 25 25 a. Name the independent variables in this study and describe their levels (2 pts).
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• Spring '12
• StephanieMilan
• Dr. Lopez, Dr. Oswald

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