Chemistry Learning Anxiety Scale: A Scale Development

Abstract

The main purpose of the study was to develop the Chemistry Learning Anxiety Scale (CLAS) instrument. The method used this study is the survey method. Data of chemistry learning anxiety was obtained through a questionnaire. There are three aspects of the chemistry learning anxiety scale that were examined in this study, Anxiety in Study Chemistry, Anxiety in Finishing Chemistry Tasks, and Anxiety in Doing Practicum. The content validity of the CLAS instrument with 48 items that had been administered to 115 student’s 11 senior high school. The data were analyzed using the Rasch model that have been 5 criteria, namely unidimensionality, item fit, difficult/ability estimation, reliable, and information function. The conclusion of the Rasch model showed that there are 46 items CLAS that fit model and excellent reliable for the person's reliable and excellent reliable for the item reliable. The CLAS instrument is a good instrument to collect the data.