Validity: The Test Doth Purport Too Much Methinks
Two pages minimum with two references
In your unit studies you read about two approaches or models of validitytrinitarian and unitary. In some ways these two models are competing views of gathering evidence for a test’s validity. In other ways the two approaches have an overlap of elements.
For this discussion:
Be sure to include citations from Guion’s 1980 article On Trinitarian Doctrines of Validity and Messick’s 1995 article Validity of Psychological Assessment: Validation of Inferences From Persons’ Responses and Performances As Scientific Inquiry Into Score Meaning.