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Validity (Chapter 8/9) (Validity (Validity Evidence (Internal structure…
Validity (Chapter 8/9)
Validity
Definition
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A valid test is always reliable, but not necessarily vice versa
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Face validity
Degree to which the research appears to be related to the construct in the opinion of the participants
Validity Evidence
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Incremental validity
If predictive ability will rise beyond that provided by already existing predictor(s) due to the measurement scores.
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