Key objectives covered in this chapter:
- Define item analysis and differentiate between dichotomously scored items and non-dichotomously scored items.
- Describe, conceptually, the main classical measures of item analysis, item difficulty, item discrimination, and (for multiple-choice) distractor effectiveness.
- Define instructional sensitivity.
- Describe the relationship between the characteristics of the examinees (sample) and the values of item statistics, and give examples of what is meant by sample dependence.
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