Internal Validity

Internal validity is a property of scientific studies which reflects the extent to which a causal conclusion based on a study is warranted. Such warrant is constituted by the extent to which a study minimizes systematic error (or 'bias').

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Famous quotes containing the words internal and/or validity:

    What makes some internal feature of a thing a representation could only its role in regulating the behavior of an intentional system.
    Daniel Clement Dennett (b. 1942)

    It does not follow, because our difficulties are stupendous, because there are some souls timorous enough to doubt the validity and effectiveness of our ideals and our system, that we must turn to a state controlled or state directed social or economic system in order to cure our troubles.
    Herbert Hoover (1874–1964)