Validating a japanese version of the force concept inventory

We evaluated the Japanese version of the FCI that was translated by a group consisting of members from Tokyo University of Science and Tokyo Gakugei University. We interviewed 16 students using a semi-structured interview where they were asked to talk out loud as they took the survey. Using set criteria, we found false-positives, and we found false-negatives even with careful students. We also found that the decision of some students to choose the right answer was the result of guessing that came about from the inadequacy of the translation. We set criteria, one of which is based on the false-negatives, false-positives, and guessing that came about from the inadequacy of the translation. Under the set criteria, we found that, of the 30 questions, 16 questions had at least one of these problems.