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By Dorling Kindersley

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It is partly for this reason that primary attention has been focused on construct validity. As Cronbach and Meehl observe, "Construct validity must be investigated whenever no criterion or universe of content is accepted as entirely adequate to define the quality to be Page 23 measured" (1955: 282). Construct validity is woven into the theoretical fabric of the social sciences, and is thus central to the measurement of abstract theoretical concepts. Indeed, as we will see, construct validation must be conceived of within a theoretical context.

One of the following formats can be adapted (depending on the style manual used): (1) HENKEL, RAMON E. (1976) Tests of Significance. Sage University Paper Series on Quantitative Applications in the Social Sciences, 07-004. Newbury Park, CA: Sage. OR (2) Henkel, R. E. (1976). Tests of significance (Sage University Paper Series on Quantitative Applications in the Social Sciences, series no. 07-04). Newbury Park, CA: Sage. Page 3 Contents Editor's Introduction 5 1. Introduction 9 Definition of Measurement 9 Reliability and Validity Defined 11 Random and Nonrandom Measurements Error 13 Conclusion 15 2.

The first interpretation, that the measure lacks construct validity, becomes increasingly compelling as grounds for Page 26 accepting the other interpretations become untenable. , have relatively high validity and reliability). Only in these situations can one confidently conclude that negative evidence is probably due to the absence of construct validity of a particular measure of a given theoretical concept. Theoretically relevant and well-measured external variables are thus crucial to the assessment of the construct validity of empirical measurements (Curtis and Jackson, 1962; Sullivan, 1971, 1974; Balch, 1974).

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