![]() ![]() It measures the reliability of the test by administering it in two different forms. This method of testing the reliability of the test is time-consuming, since the researcher has to wait for some time to re-administer the test. The results of the tests and the inferences drawn have to be applied to natural settings, they should be reliable. In natural sciences, the researcher conducts experiment more than one time to ascertain its reliability. ![]() In social sciences, a test is administered more than one time over a period of time to check or retest its reliability. Test-retest reliability measures the reliability of the measure over a period of time. There are several external factors that influence the human behaviors and it is very important to know the effect of any such factor other than the independent variable. However, in social sciences it is difficult to achieve reliability in the data collection, because, human behaviors are difficult to repeat even in similar situations. In social sciences, the researcher uses logic to achieve more reliable results. In experiments, the question of reliability can be overcome by repeating the experiments again and again. Theories are developed from the research inferences when it proves to be highly reliable. ![]() Researchers repeat research again and again in different settings to compare the reliability of the research. In the research, reliability is the degree to which the results of the research are consistent and repeatable. Definitions of reliability and validity Reliability ![]()
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