Discussion:
Construct Validity and Face Validity
Please help me with this question:
Construct validity/validity measures the usefulness of a test for specific purposes. For instance, tests of depression, such as the Beck Depression Inventory (BDI), correlate well with clinician assessments of depression, so they can be considered valid measures of depression. On the other hand, the BDI does not predict job performance well, so it would be invalid for that purpose. Types of validity include criterion-related, content, construct, and face validity.
A description of the construct of face validity is important but is not validity in the technical sense. A test has face validity if it appears to measure what it purportedly measures. For instance, a math test for truck drivers should ask questions about gas mileage and load weight. If it contained questions about cake recipe proportions, it would lack face validity. Explain how you might assess the construct validity of a measure of that construct. Explain the influence of reliability of your measure on the magnitude of its validity.