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Validity

Author(s):
Messick, Samuel J.
Publication Year:
1987
Report Number:
RR-87-40
Source:
ETS Research Report
Document Type:
Report
Page Count:
214
Subject/Key Words:
Test Interpretation, Test Theory, Test Use, Test Validity

Abstract

This book-length essay provides a comprehensive theoretical framework for understanding test validity. A unified view of validity is here formed by two bases for justifying tests (evidential and consequential) and two functions of testing (interpretation and use). The intersection of these framing ideas yield several complementary facets of validity but, as Messick would argue, not different types of validity. There is only one type—construct validity—which calls for multiple lines of evidence to support the appropriateness, meaningfulness, and usefulness of score-based inferences. (214pp.)

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