difNLR: DIF and DDF Detection by Non-Linear Regression Models
Adéla Hladká, Patrícia Martinková · 2016
Detection of differential item functioning (DIF) among dichotomously scored items and differential distractor functioning (DDF) among unscored items with non-linear regression procedures based on generalized logistic regression models (Hladka & Martinkova, 2020, ).