Development of Self-assessment Instruments to Measure Student Affective Domains on Online Biology Learning

The purpose of this study was to determine the process of developing a self-assessment assessment instrument that measures the affective domain in online biology learning that meets the content and construct validity. The type of research and development that adopted the Plomp development model was used in this study. The subjects of this study were students of class XI MIPA at SMA Negeri Padamara, Purbalingga Regency, Central Java, totalling 40 students in May 2021. The instruments used in this study were self-assessment questionnaires and teacher questionnaires. The validity test results with the calculation of the validity coefficient value show a value of 0.45 so that the assessment instrument can be valid. The reliability test results obtained a coefficient value of 0.957 so that the assessment instrument can be said to be reliable. Furthermore, the results of expert validation got a score of B. These results met the criteria well and could be used with slight revisions. Thus, it can be concluded that the evaluation instrument produced in this development has met content and construct validity.