skip to main content skip to footer

Uncommon Measures Revisited NAEP SAT ACT NRC

Dorans, Neil J.
Publication Year:
Report Number:
ETS Research Report
Document Type:
Page Count:
Subject/Key Words:
Linking, Linking and Aligning Scores and Scales, Concordance, National Assessment of Educational Progress (NAEP), SAT, ACT, Test Validity, National Research Council (NRC), Statistical Analysis


This report, which is based on an invited presentation given at the 2015 meeting of the Association of Test Publishers, is a response to the continuing proliferation of scale linking studies that have occurred since the publication of Uncommon Measures in 1999.The report has four parts. First, I restate the conclusions made in Uncommon Measures about linking the scales of state assessments to the National Assessment of Educational Progress scale and summarize points made by Thissen with respect to such linkages. Then I reiterate the important role played by the features of testing situations on the type of linkages made by Kolen and note how these features interact with the taxonomy of score linkages provided by Holland and Dorans. Next, I summarize findings from a 2010 National Council on Measurement in Education symposium that described the linkage studies conducted in 2008 to update the concordances between the 2005 version of the SAT test and the ACT, and I discuss their implications for linking score scales in general. Finally, I offer some concluding advice pertaining to linkages in general.

Read More