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Define content validity and explain why psychological researchers often rely on multiple-item measures, rather than a single item, to achieve it.
Question: Define content validity and explain why psychological researchers often rely on multiple-item measures, rather than a single item, to achieve it.
Sample answer: Content validity refers to the extent to which a measure adequately covers all aspects of the theoretical construct it is designed to assess. In psychological measurement, researchers often rely on multiple-item measures because a single item rarely captures the full complexity of a construct comprehensively.
Key points:
- Definition of content validity as covering all aspects of the theoretical construct it is designed to assess.
- Explanation that a single item rarely captures the full complexity of a psychological construct comprehensively.
- Explanation that multiple-item measures are often required to cover a construct adequately.
Rubric: The response must define content validity as the extent to which a measure covers all aspects of the target theoretical construct. It must also explain that single-item measures are typically insufficient because they cannot capture the full complexity of psychological constructs comprehensively, and that multiple-item measures are required to cover a construct adequately.
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Research Methods in Psychology - 4th American Edition @ KPU
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