A Simple Approach for Differential Test Functioning Based on Sum Scores
Educational and Psychological Measurement
Published online on June 29, 2026
Abstract
Educational and Psychological Measurement, Ahead of Print.
Differential test functioning (DTF) evaluates whether a test exhibits group differences beyond those attributable to latent trait differences. Its magnitude is often most interpretable on the raw-score scale. However, most existing DTF effect size ...
Differential test functioning (DTF) evaluates whether a test exhibits group differences beyond those attributable to latent trait differences. Its magnitude is often most interpretable on the raw-score scale. However, most existing DTF effect size ...