There are a lot of ways to see if a psychological test is valid or reliable, especially in the context of abnormal psychology. Validity means the accuracy of a test in assessing what it is supposed to measure. In terms of validity, there are a lot of different types. There is content validity, concurrent validity, predictive validity, construct validity, and face validity. They cover a lot of bases on which psychologists believe these tests will alter the data obtained. Reliability indicates its consistency in measuring what it is supposed to measure. There are also a lot of different types of reliability. There is test-retest reliability, internal reliability, alternate form reliability, and interrater reliability. Both of these aspects are very important for proper testing and assessing of psychological abnormalities.
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