Psychometric Tools: An Interactive Web Applications for Measurement and Assessment Research

Psychometric Tools is a collection of interactive, browser-based web applications designed to support psychometric research and teaching. The current release includes: (1) C-NRSBTool, a calculator for the Cumulative Normal Response Scale Bias metric; and (2) DIF-AccumulationTool, a simulator that illustrates how item-level Differential Item Functioning (DIF) effects accumulate into systematic total-score differences between groups under the Graded Response Model (GRM). Both tools run entirely in the browser with no installation required.Check it at: https://enheragu.github.io/psychometric-tools