The Development of Critical Thinking Inventory Instrument for Biology Department Students

This research aims to develop the inventory instrument of critical thinking for department biology student that valid. This research is a research and development. Preliminary research was conducted to accumulate the critical thinking indicators that are relevant to the inventory of critical thinking for student. The development of prototype (prototype stage) was conducted for designing and implementing the prototype product of critical thinking inventory instrument for student. Porotype inventory of critical thinking of student was assessed (assessment phase) to determine the validity of final product of critical thinking inventory instrument of student that has produced. Instrument Assessment of assessment sheet critical thinking inventory instrument of student and critical thinking inventory instrument sheet of student was conducted by two experts and practitioner validators. The result of validity index (Gregory, 2008) assessment sheet of critical thinking inventory instrument of student is 0,95 (valid and all criteria are fulfilled). The average value of the validity of critical thinking inventory of expert validator is 4,81 with valid category and the average value of validity of student critical thinking inventory of practitioner validators is 4,67 with valid category. The average validity value of critical thinking inventory of student by expert validators and practitioner validators is 4,74 that classified as very valid category.Keywords: Inventory, Critical Thinking, Research and Development, Studen