Provider: Japan Science and Technology Agency Database: J-STAGE Content:text/plain; charset="utf-8" TY - JOUR TI - Statistical Analysis of Essay Test Data TI - ——Investigation of Measurement Problems by Controlling Length of Essays—— AU - USAMI,Satoshi JO - Kodo Keiryogaku (The Japanese Journal of Behaviormetrics) VL - 38 IS - 1 SP - 33 EP - 50 PY - 2011 DO - 10.2333/jbhmk.38.33 ER -