skip to main content skip to footer

An Alternative to Equating With Small Samples in the Non-Equivalent Groups Anchor Test Design NEAT

Kim, Sooyeon; von Davier, Alina A.; Haberman, Shelby J.
Publication Year:
Report Number:
ETS Research Report
Document Type:
Page Count:
Subject/Key Words:
Linking Bias, Test Equating, Non-Equivalent-Groups Anchor Test (NEAT) Design


One design uses a high reliability test and an external anchor, and the other uses a relatively low reliability test and an internal anchor. The chained linear equation functions derived from the total sample are used as the criterion equating function in both assessments. The results from each of these methods were compared to the criterion equating function with respect to the linking bias and error. The study indicates that the synthetic functions might be a better choice than the chained linear equating method when samples are neither large nor representative.

Read More