Chapter 12: Research Design Explained

  1. You are now at the Chapter 12 section of the text's student Web site. Here you can
    1. Look over the concept map of the key terms and look at a glossary of the key terms.
    2. Test yourself on the chapter objectives.
    3. Test yourself on the key terms.

    4. Take the Practice Quiz (a short, general quiz over the entire chapter).
      • Take 10-item quizzes over the first part of the chapter.
      • Take 9-item quizzes over the second part of the chapter.
      • Take 6-item quizzes over the third part of the chapter.
      • Take 7-item quizzes over the fourth part of the chapter.
    5. Review by looking at the key issues and reading the chapter summary.
  2. Test your skill at interpreting main effects and interactions.
  3. To get a better understanding of main effects and interactions (or for help stating the results--or predicted results--of a study in terms of main effects and interactions), click here.

    If you have an older computer, you may also download either the pre-Windows7 version or  the System 9 Macintosh version of the Chapter 12 tutorial to practice

    1. Interpreting ANOVA tables and
    2. Interpreting graphs of the results of factorial experiments.
  4. If you are still unsure about how to interpret a 2 X 2 factorial experiment, here are two short web tutorials that should help.

        1. The authors' tutorial (works well with the book)

        2. A well-respected  tutorial that focuses on interactions--and gives you a certificate.

  5. This PowerPoint tutorial will help you understand interactions--without math.
  6. Download this thorough tutorial. It is long, but you will be a master at interpreting 2 X 2 designs once you are done. If you want to learn in smaller bites, download the following three tutorials:

        Introduction to factorial experiments, Part 1: Simple main effects

        Introduction to factorial experiments, Part 2: Main effects and interactions

        Introduction to factorial experiments, Part 3: Interpreting graphs of 2 X  2 experiments

  7. Do an ANOVA using a statistical calculator.
  8. Get a better idea of the steps involved in conducting a study by reading "Web Appendix: Conducting a Study."
  9. Get a more in-depth understanding of interactions (especially ordinal and disordinal ones) by reading this Web Appendix.
  10. Get help calculating degrees of freedom for a factorial design
  11. Help with answering the end-of-chapter exercises

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