validity

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validity

 [vah-lid´ĭ-te]
the extent to which a measuring device measures what it intends or purports to measure.
construct validity the degree to which an instrument measures the characteristic being investigated; the extent to which the conceptual definitions match the operational definitions.
content validity verification that the method of measurement actually measures what it is expected to measure; see also face validity.
external validity the extent to which study findings can be generalized beyond the sample used in the study.
face validity a type of content validity, determining the suitability of a given instrument as a source of data on the subject under investigation, using common-sense criteria.
internal validity the extent to which the effects detected in a study are truly caused by the treatment or exposure in the study sample, rather than being due to other biasing effects of extraneous variables.
predictive validity the effectiveness of one set of test or research results as a predictor of the outcome of future experiments or tests.

va·lid·i·ty

(vă-lid'i-tē),
An index of how well a test or procedure in fact measures what it purports to measure; an objective index by which to describe how valid a test or procedure is.

validity

[valid′itē]
(in research) the extent to which a test measurement or other device measures what it is intended to measure. A data collection tool should accurately reflect the concept that it is intended to measure. Kinds of validity include construct validity, content validity, current validity, and predictive validity. Compare reliability.

methodological quality

The extent to which the design and conduct of a trial are likely to have prevented systematic errors (bias). Variation in quality can explain variation on the results of trials included in a systematic review. Rigourously designed (better quality) trials are more likely to yield results that are closer to the “truth” (i.e., unbiased).

va·lid·i·ty

(vă-lid'i-tē)
Truthfulness; the ability of a test to measure correctly as intended.

validity 

The extent to which a measurement correctly measures what it is supposed to measure or to which extent the findings of an investigation reflect the truth. In health sciences, validity is commonly assessed by determining the sensitivity and specificity factors. See reliability; sensitivity; specificity.

va·lid·i·ty

(vă-lid'i-tē)
Index of how well a test or procedure in fact measures what it purports to measure; an objective index by which to describe how valid a test or procedure is.

validity,

n the degree to which data or results of a study are correct or true.
References in periodicals archive ?
Gorsky constructed what she thought would be a valid argument to avoid sex (at least with her husband) for the rest of her life.
Importantly, the court did not say that the GP did not have a valid argument, just that it did not have jurisdiction.
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.
Marra (2002) suggests that these students can be taught in online environments to grasp the value of evidence in constructing a valid argument through "constraint-based" online discussion tools.
Therefore, if someone could advance argument "P" as an argument for the fetus' right to life, such that both proabortion proponents and the undecided population could accept if the argument could be demonstrated, then, and only then, would this be a valid argument against abortion.
The Transport Workers Union, representing the employees, stated that although the financially strapped airline needs relief it has not shown a valid argument for that specific amount of concessions to avoid bankruptcy.
Because Katz clearly provides Fourth Amendment protection to people rather than places, (34) this would appear to be a valid argument.