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Reliability - the Precision of a Measurement (Version 2.0)
[working paper]
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GESIS - Leibniz-Institut für Sozialwissenschaften
Abstract Reliability describes the precision of a measurement. This contribution begins by defining the concept of reliability and explaining why the reliability of a measurement is relevant. It then discusses the model assumptions that must be made in order to estimate the reliability of a measurement, and ... view more
Reliability describes the precision of a measurement. This contribution begins by defining the concept of reliability and explaining why the reliability of a measurement is relevant. It then discusses the model assumptions that must be made in order to estimate the reliability of a measurement, and it presents five methods of estimating reliability: the test-retest method, the parallel-forms method, the split-half method, the internal consistency method, and the estimation of reliability using structural equation modelling. The contribution concludes with a brief outline of the commonalities and differences between classical test theory and the item response theory and the importance of these theories for the estimation of reliability.... view less
Keywords
theory comparison; measurement instrument; reliability; measurement theory; measurement; quality; correlation; survey research
Classification
Methods and Techniques of Data Collection and Data Analysis, Statistical Methods, Computer Methods
Document language
English
Publication Year
2016
City
Mannheim
Page/Pages
10 p.
Series
GESIS Survey Guidelines
Status
Primary Publication; peer reviewed
Licence
Creative Commons - Attribution-Noncommercial-No Derivative Works 4.0