Establishing Reliability and Validity

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Establishing Reliability and Validity

In conducting a research or survey, the quality of the data collected in the research is of utmost importance. One’s assessment may be reliable and not valid and thus this is why it is important that when designing a survey, one should also come up with the methods of testing the reliability and validity of the assessment tools. For MADD (Mothers Against Drunk Driving) to conduct a survey, the questions they propose to use must pass the validity and reliability test for one to conclude that the survey is reliable and valid. This survey will try to find out the risk factors that contribute to drunken driving by teenagers or young adults.

Reliability can be defined as the statistical measurement of how consistent and repetitive a research tool or instrument can measure what it is purported to do (Litwin, 1995, p. 6). Validity on the other hand is the measure of how truly or correctly the tool or instrument can measure what it is designed to do (Miller & Kirk, 1986, p.19). Reliability and validity are asymmetrical, meaning that one can be able to achieve ideal reliability with no validity but with a perfect validity comes a perfect reliability. But theoretically, one cannot be able to achieve a perfect validity as no instrument or tool can perfectly be standardized and no assessment or experiment can be perfectly controlled (Miller & Kirk, 1995, p. 21). Normally, tests on reliability are done but none are done on validity. To assess the reliability and validity of the questions that MADD want to use in their survey, several tests will be run on the questions to evaluate the different types or reliabilities and validity. To establish the validity and reliability of this survey, a pilot survey ...

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...and validity of the questions that MADD wish to use, then we can have confidence that the survey data collected will be close to the true value and that it measures the risk factors that play a big role in teenage drunk driving. Having a perfect survey is not possible, but with good standardization of the research tools, we can be able to achieve a high level of reliability and hence a highly valid survey result.

Works Cited

Carmines, E. G., & Zeller, R. A. (1979). Reliability and validity assessment. London: Sage Publications Inc.

Goodwin, C. J. (2010). Research in psychology: Methods and design. Hoboken, NJ: John Wiley and Sons.

Kirk, J., & Miller, M. L. (1986). Reliability and validity in qualitative research. London: Sage Publications Ltd.

Litwin, M. S. (1995). How to measure survey reliability and validity. London: Sage Publications Ltd.

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