Karakterisasi tes keterampilan berpikir kritis dalam aspek evaluation berdasarkan graded response models

Abstract

Information, knowledge, and technology are currently developing very rapidly as the world has entered the 21st century. Therefore, the role of educational institutions is very important to prepare students to have skills that support this century, one of which is critical thinking skills. Students' critical thinking skills can be identified through measuring instruments that can stimulate students to think critically. However, in reality, educators rarely develop measuring instruments that can identify critical thinking skills because it takes a long time and is difficult to construct and analyze these measuring instruments. This study aims to determine the characteristics of critical thinking skills tests in the aspect of evaluation based on Graded Response Models. This type of research is a quantitative descriptive research. The research population taken was all students of class XI SMA Negeri in Cianjur Regency with a sample of 132 students from three different schools. The sample was determined by using purposive sampling combined with convenience sampling. Research data was taken through a critical thinking skills test in the form of a four-tier diagnostic test instrument with 20 items oriented to aspects of critical thinking skills according to Facione (2020), namely interpretation, analysis, evaluation, inference, explanation, and self-regulation. The main focus in this research is the 3 items developed based on the evaluation aspect. Data analysis carried out in this study was based on item response theory with Graded Response Models assisted by the eirt 2.0.3 software. The results of the test characteristic curve analysis show that the critical thinking skills test on the evaluation aspect obtains a discriminating power in the range of 0.60 to 1.11 which is included in the good category. Meanwhile, the difficulty index (bjk) is in the range of -0.99 to 5.06 with a different difficulty index for each category. The information peak of the information function curve for each item in the evaluation aspect lies in the range of 0.69 to 1.71. This shows that this test can measure students' critical thinking skills in the evaluation aspect from moderate to high abilities.