DQuestion 18 1 pts I want to develop a legal drug that will help people be the b

Question

DQuestion 18 1 pts I want to develop a legal drug that will help people be the best football players in the world (to use on the Oklahoma Sooners and Dallas Cowboys). In my experiment, I inject high school students with my new drug (experimental) or a placebo (control) and find that the drug worked (they played a game and the drug group won)! However, I am not able to publish my work, due to a selection threat to internal validity. Which of the following demonstrates that threat in my research? O A. Both groups were made up of football players. O B. The experimental group and the control group were not friends. O C. The control group consisted of people who were randomly assigned to be in that group, and we used random assignment for the experimental group. D. The experimental group consisted of students already playing football and the control group consisted of non-athletes E. The goal of the study did not include the University of Utah. ALIENWARE

Explanation / Answer

Ans D) The experimental group consisted of students already playing football and the control group consisted of non-athletes.

Random assignment of players in both the groups , i.e. experimental and control , eliminates the selection threat to the internal validity of the research. In such a case any difference in the response is due to the drug treatment given to these players and not the players themselves.

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