Susanto, Hari Purnomo and Abadi, Agus Maman and Haryanto, Haryanto and Retnawati, Heri and Ali, Raden Muhammad and Djidu, Hasan (2025) Development of irtawsi: A User-Friendly R Package for IRT Analysis. Development of irtawsi: A User-Friendly R Package for IRT Analysis, 14 (1). pp. 1-23. ISSN 2089-6247

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Abstract

The complexity of the IRT analysis makes it difficult to perform manually, therefore requiring easy-to-
use software. While many software options exist for IRT analysis, the high cost of paid software can
make it inaccessible for many students and lecturers in Indonesia. While the mirt package provides a
complete, free option for IRT analysis, proficiency in the R programming language is required. This study
aims to develop an R package for IRT analysis, equipped with a user-friendly interface based on the mirt
package, designed to be easy to use for beginners in IRT analysis. The System Development Life Cycle
(SDLC) model is used for development and includes five stages: Planning, Analysis, Design,
Implementation, and System. The resulting package is named irtawsi and includes functionality
comparable to paid software. This package can calibrate both test and non-test instruments using various
IRT models, such as the Rasch, 2PL, 3PL, 4PL, GRM, PCM, and GPCM models. The irtawsi package
functionality includes: (1) an easy-to-use user interface, (2) automatic interpretation of analysis results,
(3) a guide for IRT analysis, (4) recommendations when assumptions are not met, (5) an HTML report
format for analysis results,(6) support for two languages (Indonesian and English), (7) it is free, and (8)
can be installed on Windows, macOS, and Linux operating systems. The results of this development
contribute to the calibration process, making it easier for practitioners and researchers to calibrate the
instruments being developed, especially for beginners who are learning IRT.

Item Type:	Artikel Umum
Divisi / Prodi:	Faculty of Teacher Training and Education (Fakultas Keguruan dan Ilmu Pendidikan) > S1-English Education (S1-Pendidikan Bahasa Inggris)
Depositing User:	S.S., M.Pd. Muhammad Ali Raden
Last Modified:	28 Aug 2025 04:13
URI:	http://eprints.uad.ac.id/id/eprint/86801
Dosen Pembimbing:	UNSPECIFIED | [error in script]

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