projectgst: A Shiny Application for Generalizability Study Analysis in Nonformal Education Settings

Indriani H Ismail, Soni Nopembri, Muhammad Nursa, Amran Hapsan, Habib Ratu Perwira Negara, Eko Wahyudi, Dyah Metianing, Febrian Solikhin, Educational Research and Evaluation, State University of Yogyakarta, Islamic Education, DDI Islamic Institute of Sidenreng Rappang, Sidenreng Rappang, South Sulawesi, Physical Education, State University of Yogyakarta

Applied Psychological Measurement

Published online on July 24, 2026

Abstract

Applied Psychological Measurement, Ahead of Print.
Generalizability Theory (G-Theory) extends classical reliability estimation by simultaneously de-composing score variance into multiple sources of measurement error such as raters, occasions, and items within a single analytical framework. Despite its ...