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 construct validity of the COPM was determined by comparing the COPM-P score with the PDI and the eight domains of the RAND-36 at baseline.
The MCAS was designed and trialled for reliability and relative construct validity.
Construct validity of measures can be established only incrementally as evidence accrues that the measures are related in theoretically interesting ways to a range of other measures and phenomena.
Construct validity testing consisted of comparing the GEM with measures of constructs thought to correlate either positively or negatively with the GEM.
This is clear evidence of the inadequacy of straight language translation and recognition of the inherent threat to construct validity when the score on a standardized measure operationally defines HRQL for culturally diverse groups.
The issue of construct validity is also a factor affecting social validity.
A strong relationship between this question and the knowledge indices would support the construct validity of the indices.
We focused on two dimensions of construct validity in particular: construct underrepresentation and construct irrelevant variance (Messick, 1994).
Finally, the construct validity of the CPCPS was investigated; specifically, correlations between the different dimensions of the scale and measures of psychosocial functioning were examined.
After construct validity and reliability were established, the proposed relationships among the constructs in Figure 3 were tested.
Construct validity for the RFL-A is shown by moderate and significant correlations with hopelessness scales and depression scales (Osman, et.
Additionally, using factor analysis, Kremer (1990) obtained only moderate construct validity for three teaching evaluation measures, namely peer ratings, student ratings, and teaching awards.