https://thmsrgrs.r-universe.devRecent package updates in thmsrgrsR-universehttps://github.com/thmsrgrs.pnghttps://thmsrgrs.r-universe.devTue, 02 Jun 2026 10:59:08 GMTthomas.rogers@britishcouncil.org (Thomas Rogers)A toolkit for detecting Differential Item Functioning (DIF) using Logistic Regression (LR) as described in Swaminathan and Rogers (1990) <doi:10.1111/j.1745-3984.1990.tb00754.x>, the IRT Likelihood Ratio Test (LRT) following Thissen, Steinberg & Wainer (1993, ISBN:0-8058-0972-4), and model-based recursive partitioning (MOB) as implemented in 'strucchange' following Strobl, Kopf and Zeileis (2015) <doi:10.1007/s11336-013-9388-3>. Designed for both standard two-group and intersectional multi-group designs, 'iDIFr' prioritises effect size reporting alongside statistical significance, clear guidance on group construction, and interpretable output suitable for applied testing contexts. Built-in Intersectional Contrast Analysis (ICA) classifies items as amplified, pure-intersection, obscured, or none by comparing single-variable and intersectional analyses.https://github.com/r-universe/thmsrgrs/actions/runs/27195364410Tue, 02 Jun 2026 10:59:08 GMTiDIFr1.0.1successhttps://thmsrgrs.r-universe.devhttps://github.com/thmsrgrs/idifrgetting-started.Rmdgetting-started.htmlGetting started with iDIFr2026-05-11 11:20:142026-05-15 15:16:39