irtDemo R Package: Pedagogical Interactive Web Applications for Estimation, Scoring, and Multi Dimensionality in Item Response Theory

Abstract

Comprehension of foundational but fairly complex statistical theories may require assistive interactive tools to understand underlying equations and theory. We provide a collection of interactive web applications to demonstrate or explore some of the fundamental yet complex item response theory concepts such as estimation, scoring and multidimensionality. Interactive web applications were developed via shiny R package. Users can access to these applications through irtDemo R package or links provided in this article. We hope that these applications give a head-start to emerging practitioners and researchers interested in advanced measurement topics.

Keywords

• item response theory
• multidimensional item response theory
• maximum likelihood estimation
• expected a posteriori ability estimation
• maximum a posteriori ability estimation
• madde tepki kuramı
• çok boyutlu madde tepki kuramı
• maksimum olabilirlik kestirimi
• beklenen sonsal yetenek kestirimi
• maksimum sonsal yetenek kestirimi