An epidemiologist collects data on demographic variables (e.g.,age,BMI,income)to predict involvement in physical activity over the next 6 months.What approach to validity is being used by this scientist?

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The epidemiologist is collecting demographic variables to predict involvement in physical activity over the next 6 months. This suggests that the epidemiologist is interested in predicting future behavior, which is a type of criterion validity. Criterion validity refers to the degree to which a measure is able to predict behavior or outcomes that are relevant to the construct being measured. In this case, the epidemiologist is interested in predicting involvement in physical activity, so criterion validity is the most appropriate approach to evaluating the validity of the measure.

An Epidemiologist Collects Data on Demographic Variables (E