Mutmainna, Mutahharah Hasyim, Syamsuriwal, Bayu Setiaji, Farida Agus Setiawati
Colorado Learning Attitudes about Science Survey (CLASS) is an instrument designed to explore students’ perceptions of physics and assess how closely their beliefs correspond with those of professional physicists. Before the development of CLASS, several similar instruments were developed in the field of Physics Education, such as the Maryland Physics Expectation (MPEX), Views About Science Survey (VASS), and Epistemological Beliefs Assessment for Physical Science (EBAPS). Adams et al. developed CLASS in 2006 by evaluating these three instruments. Since then, CLASS has been extensively studied for its use in research, especially in Physics Education. It has also been applied in other fields and translated into several languages. As a form of community strengthening, this article attempts to report the research findings related to using the CLASS instrument that has been translated into Indonesian. A total of 292 undergraduate students from four universities were sampled in this study. The respondents in this study were students who had enrolled in the Fundamental of Physics course. The data obtained were analysed using the Grade Response Model (GRM) method after comparison with several other methods for polytomous scale with Item Response Theory (IRT) like Partial Credit Model (PCM), Rating Scale Model (RSM), and Generalized Partial Credit Model (GPCM). The research results show the model considered most suitable is GRM The research results show that among the four models of approach and based on the criteria used, the model considered most suitable is GRM. The research also shows that the number of items declared consistent with the model does not cover all CLASS items but rather some items. This finding indicates that further exploration of the CLASS instrument items is needed, especially in the Indonesian version. The findings of this study also add to the wealth of knowledge related to the quality assessment of the CLASS instrument through the modern test theory approach (IRT). Thus, the CLASS instrument can be considered a standard instrument used globally across various populations. © 2024, Syarif Hidayatullah State Islamic University (UIN) Jakarta. All rights reserved.
Universitas Sulawesi Barat, Indonesia; Universitas Negeri Makassar, Indonesia; Universitas Tadulako, Indonesia; Universitas Negeri Yogyakarta, Indonesia
