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. Author manuscript; available in PMC: 2020 Feb 1.
Published in final edited form as: J Thorac Cardiovasc Surg. 2018 Oct 19;157(2):820–827.e1. doi: 10.1016/j.jtcvs.2018.09.117

TABLE 2.

Types of validity

Validity type Definition
Criterion-related validity Correlation between outcomes of the assessment tool and defined criteria indicative of the ability being tested
Content validity Extent to which the assessment method covers the subject matter
Construct validity Ability of an assessment to evaluate traits that cannot be directly measured
Unitary concept of validity Conclusions of assessments are judged for validity rather than the assessment tools themselves. Content validity serves as evidence of the subject matter, and criterion-related validity serves as evidence of relationship to other variables.