本研究目的在於比較RASCH評分量尺模式和RASCH二分模式在國小運動技能上的應用，受試者是國小五年級體育課籃球教學447名學生的基本投籃測驗，使用WINSTEPS軟體電腦程式進行估計，從試題校準，受試者和試題的關係，資料和模式的適合度分析，估計試題難度，估計受試者能力，和反應類別機率曲線等項的比較，本研究的結果得到結論為，RASCH二分模式應用在國小運動技能測驗上，容易符合模式要求，實用性高。評分量尺模式較為複雜，應用在國小運動技能測驗上，不易符合模式要求，但能提供較多測驗訊息，可以更有效提昇國小運動技能測驗的品質。

The purpose of the study was to compare with reating scale model and Rasch’s dichotomous model in the applications of the elementary school psychomotor test. The subjects were 447 fifth grade students’ basic basketball-throwing testing in basketball course. It used the WINSTEPS software program to estimate the testing. They with item calibration, item and person distribution map, model-data fit, estimation person ability, estimation item difficulties and category probability curves. The results we got show that the Rasch’s dichotomous model was easy to model data fit. Rating Scale Model could present more test information and exactly estimation of item difficulty and examinees’ ability, but the model had difficulty fitting in the psychomotor test. And it can enhance the high quality of the elementary school psychomotor test.