Which type of validity is the most desirable yet most difficult to achieve?

Name: Which type of validity is the most desirable yet most difficult to achieve?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Predictive validity is the most desirable type of validity because it involves the ability of a measure to accurately predict behavior or outcomes in the future. However, it is also the most difficult to achieve because it requires extensive follow-up studies to assess the accuracy of the predictions made by the measure.

Which Type of Validity Is the Most Desirable Yet Most