When tests are carried out, it is important to determine their validity and reliability. The researcher must consider the validity and reliability of a test before deciding on which test to use in a research. This is because these two factors have an impact on the accuracy and credibility of the results of the research. Outcomes of well undertaken tests can be used to predict future trends on the research topic
A reliable test is one whose outcomes can be depended on when making decisions because of its consistency. It implies that the test can be depended upon for other purposes since it is proven to give consistently accurate results. A test is valid if its outcomes or conclusions are drawn from logical steps and the whole process is correctly interpreted.
The reliability and validity of a test is used to decide the type of test to use in a research. This is because these two factors influence the outcome, accuracy, consistency and credibility of the research.
Importance in decision making
The reliability and validity of a test can be used to determine if a test should be given serious consideration. This is because they help in determining how efficient and accurate the results of a test are. Furthermore, the tests are done in line with validity and reliability can be used as predictors. This is because they have consistency and logic that can be used to establish accurate trends which will be used to predict future test outcomes.
Pros and cons
Reliability and validity enhance the accuracy, logic and consistency of the test outcomes. However, these two factors limit the researcher from using other unproven test methods. Researchers will only prefer to use the methods whose reliability and validity is proven.
Validity and reliability help researchers decide the test to use in a research. Furthermore, they determine whether the test’s outcomes can be considered seriously. Reliable and valid tests can yield results that can be used as predictors.
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Edwards, J., Scott, J. C., & Raju, N. S. (2003). The human resources program-evaluation handbook. Thousand Oaks, CA: Sage Publications.