摘要:The purpose of this research is to develop a measurement instrument of scientific
reasoning tests for biology education students. The research method used the
development stage of the instrument based on the test development procedure
according to Oriondo & Dallo-Antonio including: (1) design of test, (2) trial test,
(3) determination of validity, and (4) determination of reliability. Test instrument
sheet consisting of 13 items and then validated by promotors and measurement
experts. The validated instruments were then tried out on 100 students in Biology
Education Program of UIN Sunan Kalijaga Yogyakarta. The polytomous data were
analyzed using Partial Credit Model (PCM-1 PL). The results showed that 13 items
of scientific reasoning instruments were proved fit with the PCM model. By using
the lowest limit criteria, INFIT MNSQ was 0.77 and the upper limit was 1.30, the
instrument reliability was 0.74 that based on the estimate of case estimate was
high. The index of difficulty of items ranged between -2.25 and 0.97. Thus,
scientific reasoning instruments which were qualified to measure scientific
reasoning skills should be prioritized in learning for biology education students.