Domain-specific critical thinking skills: Designing and analysis the instrument test on thermochemistry

Abstract

Chemistry learning needs an assessment to evaluate ways of students' thinking. One them is critical thinking skill test. The purpose of this study is designing domain-specific critical thinking (DS-CT) skill on thermochemistry concept. There are 29 DS-CT Skills test to measure students' DS-CT skills. Content Validity Ratio (CVR) and Confirmatory Factor Analysis (CFA) were evaluated to analysis the validity of DS-CT Skills test. Cronbach's Alpha evaluated to analysis the reliability. Research and Development was used as research design. The participants of this study are 185 senior high school students in Cilegon-Banten-Indonesia. Data are obtained from expertise judgment, empirical test, and interview. The results showed that validity of DS-CT skills test on thermochemistry concept based on CVR and CFA is 0,723 (good criteria). Cronbach's Alpha test showed 0,652 (high criteria). It can be conclude that this DS-CT Skills test is feasible to measure students' DS-CT skills on thermochemistry domain knowledge. Students' CT skill on domain thermochemistry are 46% on present and provide arguments, 27% make and assess claims, and 21% analysis arguments.