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Week 1 Assignment: Explore the Logic of Experimental Design 

In a paper, answer the following questions:

  1. Jackson (2012) even-numbered Chapter Exercises (p.      244).
  2. What is the purpose of conducting an experiment? How      does an experimental design accomplish its purpose?
  3. What are the advantages and disadvantages of an      experimental design in an educational study?
  4. What is more important in an experimental study,      designing the study in order to make strong internal validity claims or      strong external validity claims? Why?
  5. In an experiment, what is a control? What is the      purpose of a control group? Of single or multiple comparison groups?
  6. What are confounds? Give an example of a design that      has three confounds. Describe three ways to alter the design to address      these confounds and explain the advantages and disadvantages of each.
  7. What does “cause” mean and why is it an important      concept in research? How are correlation and causation related?
  8. You are a researcher interested in addressing the      question: does smiling cause mood to rise (i.e., become more positive)?      Sketch between-participants, within-participants, and matched-participants      designs that address this question and discuss the advantages and      disadvantages of each to yielding data that help you answer the question.      Describe and discuss each design in 4-5 sentences.

Support your paper with a minimum of 5 resources. In addition to these specified resources, other appropriate scholarly resources, including older articles, may be included.

Length: 5-7 pages not including title and reference pages
References: Minimum of 5 scholarly resources.
 

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