Validity of the Instrument for the Critical Analysis Ability of Prospective Biology Teacher Students

Abstract

This research aims to evaluate the validity and reliability of an instrument designed to measure the critical analysis skills of prospective biology teacher students. Content validity was calculated using the Content Validity Ratio (CVR) and Content Validity Index (CVI), which involved five biology education experts. Of the nine items tested, seven were declared valid with a CVR value 1.0, while the other two were declared invalid. The empirical validity and reliability of the instrument were tested on 60 students using SPSS 23. The results of the empirical validity test showed that all items were valid with a Pearson Correlation value greater than r-table (0.254). The instrument's reliability was also good, with a Cronbach's Alpha value of 0.714. The research results show that this instrument is valid and reliable for measuring the critical analysis skills of prospective biology teacher students.