Kinds of validity


Validity: the degree to which the results of a research study provide trustworthy information about the truth or falsity of the hypothesis.

I. Conceptual validity – of the hypothesis.

The degree to which the test of a particular research hypothesis promises to make a valuable addition to existing knowledge about the behavior in question.

II. Construct validity – of the variables.

The overall quality of the measurement operations used to transform the constructs in a research hypothesis into the variables in a research study.

III. Internal validity –

The extent to which a causal inference can be drawn with confidence from the research.

IV. External validity –

The extent to which research results can be generalized beyond the specific sample and context of the study.

V. Statistical conclusion validity –

The degree to which the statistical analysis of the research results contributes to an accurate understanding of the truth of the hypothesis.