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 ?
He suggests that (6) is a valid argument because, having a necessarily true conclusion overrules the possibility of having true premises and false conclusion which, by definition, suffices to label an argument as invalid.
A valid argument has been made that secondary capital, if allowed, would satisfy Section A and the short-and long-term losses to the fund could be mitigated.
That might not be a valid argument, but to simply ignore it smacks of the same cultural imperialism that O'Barry has been accused of.
There isn't a valid argument on safety; pistols are as safe as long guns mechanically.
He is far better than that, though, and a valid argument could be made that the ground went against him that day.
Gorsky constructed what she thought would be a valid argument to avoid sex (at least with her husband) for the rest of her life.
There's no doubt that this is a valid argument, and one to be explored and considered in the large view of drug policy.
After explicating the arguments Salerno and Tennant attribute to Dummett, the author shows how broader attention to Dummett's writings on the theory of meaning allows one to discern, and formalize, a valid argument for logical revision.
Though not all would agree that such therapy is necessary, there is a valid argument that suggests business people can be inhibited by hidden fears.
While I understand that many centrist gays and lesbians have a valid argument in claiming that second-class civil unions are a necessary temporary measure, to praise Bush as a champion of sexual freedom and an AIDS crusader is preposterous.
The most valid argument that vendors can make about their 2-way products is that their customers are not having performance and scalability problems and it is a non-issue.
Studying the arts to help you in school is not a valid argument.