How to control impact of extraneous variables on experiment


Problem 1: Why do we do research? What are we trying to achieve by doing an experiment? How does this differ from correlational research? What are the components of a valid experiment? 

Problem 2: What are some of the ways that we can control the impact of extraneous variables on our experiment?  Why is this important? Why and how do we use control groups in experimental research? 

Problem 3: Explain the difference between a moderator and a mediator.  Give an original example of each. 

Problem 4: What are the "trade-offs" of doing a lab experiment versus a research study in a field setting? 

Problem 5: Identify and define, to the best of your ability, the three types of validity.  

Using specific examples from the film and reading explain the ethical violations that occurred during the Tuskegee Syphilis Experiment.

YouTube Video: The Deadly Deception

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