RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
THE SCIENTIFIC METHOD AND DESCRIPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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validity; reliability
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reliability; validity
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Either A or B
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None of the above
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Detailed explanation-1: -Validity will tell you how good a test is for a particular situation; reliability will tell you how trustworthy a score on that test will be. You cannot draw valid conclusions from a test score unless you are sure that the test is reliable. Even when a test is reliable, it may not be valid.
Detailed explanation-2: -Validity refers to whether a test measures what it aims to measure. For example, a valid driving test should include a practical driving component and not just a theoretical test of the rules of driving.
Detailed explanation-3: -Test-retest reliability is a measure of reliability obtained by administering the same test twice over a period of time to a group of individuals. The scores from Time 1 and Time 2 can then be correlated in order to evaluate the test for stability over time.