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Additional Considerations

30 November, 2015 - 16:40

LEARNING OBJECTIVES

  1. Define Type I and Type II errors, explain why they occur, and identify some steps that can be taken to minimize their likelihood.
  2. Define statistical power, explain its role in the planning of new studies, and use online tools to compute the statistical power of simple research designs.
  3. List some criticisms of conventional null hypothesis testing, along with some ways of dealing with these criticisms.

In this section, we consider a few other issues related to null hypothesis testing, including some that are useful in planning studies and interpreting results. We even consider some long-standing criticisms of null hypothesis testing, along with some steps that researchers in psychology have taken to address them.