Define the Concepts of Standardization, Reliability, and Validity, and Explain

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The Answer is The answer should include the following information: Standardization means that a test is given to a large number of participants who are thought to be representative of the group of people for whom the test has been designed. Everyone takes the same form of the test under uniform conditions. The scores from this process establish the norms, or the standards, for the test; individual scores are compared to this standard score. For IQ tests, such norms closely resemble a normal distribution. A bell-shaped curve shows that most scores cluster around the average score and more extreme scores are less commonly observed. Reliability refers to the idea that a test records similar scores on different occasions in a consistent manner. Reliability can be assessed by administering two similar, but not identical, tests at different times. Alternatively, the scores on one half of the test with the scores on the other half of the test can be compared. A reliable test produces test and retest scores that are similar. Validity refers to the notion that a test measures what it is supposed to measure. A validity test should have predictive value. For example, a test that purports to measure depression should adequately and accurately measure thoughts and behaviors related to depression.

Define the Concepts of Standardization, Reliability, and Validity, and Explain

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