Psychological assessment is an important part of both experimental research and clinical treatment.

A valid test ensures that the results accurately reflect the dimension being assessed.

There are four types of validity: content validity, criterion-related validity, construct validity, and face validity.

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Because each judge bases their rating on opinion, two independent judges rate the test separately.

Items that are rated as strongly relevant by both judges will be included in the final test.

There are two different types of criterion validity: concurrent and predictive.

Predictive validity is of particular importance in fields like education and clinical psychology.

Face Validity

Face validity is one of the most basic measures of validity.

Obviously, face validity only means that the testlookslike it works.

It does not mean that the test has been proven to work.

These factors undermine the credibility and accuracy of a test.

Consistent results do not always indicate that a test is measuring what researchers designed it to.

Validity refers to how well a test actually measures what it was created to measure.

Reliability measures the precision of a test, while validity looks at accuracy.

Generally, experts on the subject matter would determine whether or not a test has acceptable content validity.

Validity can be demonstrated by showing a clear relationship between the test and what it is meant to measure.

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