Clinical and research implications of revising psychological tests

This article integrates those of other contributors to this special section , "Methods and Implications of Revising Assessment Instruments," to undersc ore important conceptual factors to consider when undertaking test revision s. These considerations include determination of when test measures have be came sufficiently understood to be incorporated in a test revision, cohort effects, revision of administration formats and test instructions, and comp arisons of performance levels across test versions. The discussion of these factors also takes into consideration clinical practice and educational im plications of making a transition to revised test versions.