![]() ![]() ![]() Less difference between two different outcomes means high test-retest reliability.Įxample of Test-retest reliability: Test-retest is a type of reliability where researchers can design a questionnaire for measuring the IQ level of people participating in research.Īfter two months gain investigator has performed the same test on a similar group of people but the outcomes generate were totally different. The less variation between the two sets of research outcomes. You can use test-retest reliability for assessing the effectiveness of research methods over a period of time. ![]() Changes in external situations might have an effect on the mood of participants. ![]() Test-retest reliability is a type of reliability that has great significance as there might be many variables that can influence the research outcomes at various points in time.įor example: Participants participating in research might have different moods. After that, you need to compute the correlation between two sets of outcomes. You need to perform similar tests on a similar group of people at different times.
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