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Validity vs Validness - What's the difference?

validity | validness |

As nouns the difference between validity and validness

is that validity is the state of being valid, authentic or genuine while validness is the state of being valid.

validity

English

Noun

(wikipedia validity)
  • The state of being valid, authentic or genuine.
  • Having legal force.
  • A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).

    • validness

    English

    Noun

    (-)
  • the state of being valid