quality control technique required to supervise and validate test items andperson responses.

The analysis of fit evaluates how well our data cooperate with the construction of measurement.
Analysis of fit gives us a tool to monitor the responses of persons anditems .
We can evaluate any set of items or persons to determine wheremisfit occurs .
Fit analysis provides the quality control techniquerequired to supervise and validate test items andperson responses.
When fit is within our guidelines, we have the control required to feel confident about item calibration and person measurement.
When misfit is discovered we can locate its occasions and begin further study of the items or persons involved.
The analysis of fit is never completed because continued use of the instrument requires that we constantly monitor item and person responses to maintain quality control .