validity

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validity

[və′lid·əd·ē]
(mathematics)
Correctness; especially the degree of closeness by which iterated results approach the correct result.

validity

the extent to which a measure, indicator or method of data collection possesses the quality of being sound or true as far as can be judged. For example, if a psychological measure, such as an intelligence test, is considered to be valid, this means that it is thought to measure what it sets out to measure. If social survey observations are said to have produced valid data, then they are considered to be true reflection of the phenomenon being studied in the population being studied (e.g. projections of voting behaviour), and the survey method could be said to have validity. Compare RELIABILITY.

In practice, in sociology and the social sciences generally, the relation between indicators and measures on the one hand and the underlying concepts they are taken to represent is often contested (see OFFICIAL STATISTICS, MEASUREMENT BY FIAT).

References in periodicals archive ?
The employability maturity interview: Reliability and construct validity.
A nomological network among theoretical and observed variables as outlined by Betz and Weiss (1987) is useful to summarize construct validity.
59), it does strengthen the scale's construct validity.
7,14 Our results show good reliability and construct validity of the MMI stations developed for selecting undergraduate students on basis of non-cognitive attributes essential for their future performance as professionals in a resource constrained environment.
Along with factorial validity construct validity was also established.
And, construct validity refers to the extent to which operationalizations of a construct do actually measure what the theory says they do.
Finally, in Study 3, we sought to replicate the factor structure of the EHS using confirmatory factor analyses (CFA) and to examine initial evidence of its construct validity.
Construct validity refers to how well the instrument establishes the theoretical soundness of the instrument.
The Purdue Pegboard Test was found to have good construct validity and test-retest reliability based on a large sample of healthy patient populations.
A confirmatory factor analysis (CFA) was used to address the first purpose of the study, construct validity.