experimental method

experimental method - Psy150OL Exam#2...

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Exam # 2 Chapter One: Experimental Method Section _______________ Experimental Method Name:  Cynthia  Bracken Part 1 Read the following experiment carefully.  The researcher has violated three major principles of  proper research.  You will not have to look for deep violations……if you understand the most  basic laws of conducting proper research, these flaws should be obvious.  Here’s the  experiment. Professor “Z” believed that vitamin C had the capacity to refresh tired minds and that aspirin  also had a mysterious power to make students cleverer.  To test this idea, he decided to give  vitamin C pills to a psychology class and to give aspirin tablets to an advanced calculus class.  All students were given a standard IQ test, then they took a pill, and then they took the IQ test  again.  Professor “Z’s” hypothesis was that both classes would show a significant increase in  IQ between the first and second tests as a consequence of the vitamin c and aspirin. The results of the experiment were as follows:  the average IQ for the 30 students in the  psychology class was 115 on the first test – after taking the vitamin c pills, their average IQ  increased to 135.  The average IQ for the 30 students in the advanced calculus class was 117  on the first test and 122 on the test after taking the aspirin tablets (must have been some kind  of aspirin!!) Professor “Z” called a press conference and triumphantly announced his conclusion that  vitamin C and aspirin both increase IQ, but vitamin C increases it more. Identify the three most serious violations of proper experimental procedure committed by  Professor “Z.” (1 point each .) 1. He failed to have the students sign a informed consent form. 2. He had too many  too many test subjects. 3. He did not have a debriefing. (These clues should be a dead giveaway!!)
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This note was uploaded on 12/03/2011 for the course PSY 150 taught by Professor Williams during the Fall '11 term at Guilford.

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experimental method - Psy150OL Exam#2...

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