About one 3-parameter Model of Testing

TL;DR

This paper introduces a three-parameter model for testing that accounts for examinee ability, item difficulty, and discrimination parameters, aiming to improve assessment accuracy.

Contribution

It presents a novel 3-parameter model of testing incorporating ability, difficulty, and discrimination as core parameters.

Findings

Model effectively captures examinee and item characteristics.

Provides a framework for more precise testing analysis.

Enhances understanding of test item discrimination.

Abstract

This article offers a 3-parameter model of testing, with 1) the difference between the ability level of the examinee and item difficulty; 2) the examinee discrimination and 3) the item discrimination as model parameters.