validity

  1. the quality of being logically valid
  2. the quality of having legal force or effectiveness

Validity

Soundness or rigour of a study. A study is valid if the way that it has been designed and carried out means that the results are unbiased i.e. that it gives you a 'true' estimate of clinical effectiveness.

Validity

A valid assessment measures what it claims to measure. Evidence may be presented in various ways satisfactory correlations with other assessments of the same abilities or skills; or with teachers estimates of their pupils' abilities; or with the pupils' subsequent achievements such as their results in public examinations.

Validity

Term used in psychology to question whether something measures that which it purports to measure. Given the great debate about intelligence any IQ test can be questioned on the grounds of its validity. Psychology immediately asks the question 'Does this test measure this thing we call intelligence?' Is it valid?
Found on http://www.gerardkeegan.co.uk/glossary/gloss_a.htm

validity

[n] - the quality of having legal force or effectiveness
Found on http://www.webdictionary.co.uk/definition.php?query=validity

Validity

the quality of measuring precisely what one intends to measure
Found on http://wps.pearsoned.co.uk/wps/media/objects/2143/2195136/glossary/glossary

Validity

(PROJECT GLOSSARY) Number of days/ weeks/months that a bid is open to acceptance by the buyer. There are legal rules over the ability of a seller to withdraw or change his bid once made.
Found on http://www.instrument-net.co.uk/projectglossary.html

Validity

A measure of whether a test actually tests what it claims to test, e.g. does the Conconi test give an accurate measure of the anaerobic threshold? (Answer = No)
Found on http://www.felpress.co.uk/Exercise_Physiology_Glossary.24.0.html

Validity

True representation or the extent to which the value obtained represents the object of interest in the absence of 'measurement error' (ie something is valid if it measures what it is supposed to measure).
Found on http://www.cirem.co.uk/definitions.html

validity

In logic, a property of inferences or arguments which are valid if the conclusion follows necessarily (by deduction) from the premises, as in a
Found on http://www.encyclo.co.uk/local/20688

Validity

The degree to which a result (of a measurement or study) is likely to be true and free of bias (systematic errors).
Found on http://www.researchautism.net/glossary.ikml?l=v

Validity

at its most simple this refers to the truth status of research reports. However, a great variety of techniques for establishing the validity of measuring devices and research designs has been established, both for quantitative and qualitative research. More broadly, the status of research as truth is the subject of considerable philosophical contro...
Found on http://people.brunel.ac.uk/~hsstcfs/glossary.htm

Validity

Va·lid'i·ty noun [ Confer French validité , Latin validitas strength.] 1. The quality or state of being valid; strength; force; especially, power to convince; justness; soundness; as, the validity of an argument or proof; the validity of an objection. 2. ...
Found on http://www.encyclo.co.uk/webster/V/4

validity

1. The extent to which a measurement, test or study measures what it purports to measure. ... 2. Occasionally, accuracy. ... (18 Nov 1997) ...
Found on http://www.encyclo.co.uk/local/20973

validity

validness noun the quality of having legal force or effectiveness
Found on http://wordnetweb.princeton.edu/perl/webwn?s=validity

validity

(vә-lid´ĭ-te) the extent to which a measuring device measures what it intends or purports to measure.
Found on http://www.encyclo.co.uk/local/21001

Validity

• (n.) Legal strength, force, or authority; that quality of a thing which renders it supportable in law, or equity; as, the validity of a will; the validity of a contract, claim, or title. • (n.) Value. • (n.) The quality or state of being valid; strength; force; especially, power to convince; justness; soundness; as, the validity of...
Found on http://thinkexist.com/dictionary/meaning/validity/

validity

(from the article `logic`) ...the argument is a deductive one. If the premises are intended to support the conclusion only to a lesser degree, the argument is called inductive. ... In logic an argument consists of a set of statements, the premises, whose truth supposedly supports the truth of a single statement called the ... ...deli...
Found on http://www.britannica.com/eb/a-z/v/4

validity

1. the extent to which a measurement, test, or study measures what it purports to measure. 2. occasionally, accuracy (q.v.).
Found on http://users.ugent.be/~rvdstich/eugloss/DIC/dictio90.html

Validity

In logic, an argument is valid if and only if its conclusion is logically entailed by its premises. A formula is valid if and only if it is true under every interpretation, and an argument form (or schema) is valid if and only if every argument of that logical form is valid. ==Validity of arguments== An argument is valid if and only if the truth o...
Found on http://en.wikipedia.org/wiki/Validity

Validity

Apprehension over the structure of an argument.
Found on http://www.translationdirectory.com/glossaries/glossary083.htm

Validity

the extent to which a test measures what it was intended to measure. Validity indicates the degree of accuracy of either predictions or inferences based upon a test score.
Found on http://ericae.net/edo/ed315430.htm

validity

An indication that an assessment instrument consistently measures what it is designed to measure, excluding extraneous features from such measurement.
Found on http://www.encyclo.co.uk/local/21150

Validity

Validity is that feature of arguments or chains of reasoning studied by the science of logic. The notion of validity may be defined in two ways. The first uses the notion of truth: an argument is valid if the truth of its conclusion is guaranteed by the truth of its premises. The second appeals to basic accepted patterns of reasoning or principles ...
Found on http://www.probertencyclopaedia.com/browse/AV.HTM

validity

Type: Term Pronunciation: vă-lid′i-tē Definitions: 1. 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.
Found on http://www.medilexicon.com/medicaldictionary.php?t=96617
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