Bill Nugent

in Encyclopedia of Social Work

Published by NASW Press and Oxford University Press

Published online June 2013 | e-ISBN: 9780199975839 | DOI:

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  • Social Work Research and Evidence-based Practice


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Measurement is a fundamentally important component of social work research. This entry briefly covers two important notions in psychometrics: reliability and validity. Reliability concerns errors of measurement, and validity concerns the accuracy of the inferences that are made from scores from a measurement procedure. Both norm-referenced and criterion-referenced measurement procedures are discussed.

Keywords: measurement; psychometric theory; reliability; validity; generalizability theory

Article.  1597 words.  Illustrated.

Subjects: Social Work Research and Evidence-based Practice

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