Question: Define validity, and describe (a) its purpose in relation to theinterpretation and use of assessment instruments; (b) the unitaryconcept of validity; and (c) the specificity

Define validity, and describe (a) its purpose in relation to theinterpretation and use of assessment instruments; (b) the unitaryconcept of validity; and (c) the specificity of validity to someparticular group, use, or purpose of test scoresinterpretation.

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