Handout 10.3:

Designing a Simple Experiment

1. What is your experimental hypothesis? (Be sure that you are hypothesizing that manipulating one variable will causes a change in another).

2. What is your null hypothesis?

3. Why do you think your experimental hypothesis will be supported?

4. What is your independent variable? How will you operationalize it?

5. What is your dependent variable? How will you operationalize it?

6. What would be the advantages of using 60, rather than 20, participants?

7. How would you determine whether a participant was in the treatment or no-treatment group?

8. What would statistically significant results mean?

9. What would it mean if your results were not statistically significant?

10. What statistical test would you use to analyze your data? What scale of measurement would you need to use such a test? Why?

11. If you had 30 participants in your study, how many degrees of freedom would you have?

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