中国少年智力量表的项目难度和鉴别力分析

Analysis on difficulty and discrimination of items of Chinese Intelligence Scale for Junior

目的分析中国少年智力量表项目的难度和鉴别力。方法以1440名常模样本为分析对象。以测验项目的分数通过率分析项目难度;以项目得分数与各自分测验得分数的相关分析和以项目通过率差作为鉴别指数的方法,分别进行项目的难度和鉴别力的分析。结果1.城乡样本各分测验项目难易顺序一致,城乡样本和总体样本CISJ的项目平均通过率分别为0.61、0.57和0.59,项目难度中等偏易。2城乡样本和总体样本8个分测验的项目得分数,与各自分测验得分数的平均相关系数,分别为0.45、0.46和0.46,基本上处于中等程度相关。3.城乡样本和总体样本的平均通过率差分别为0.37、0.36和0.36,也基本符合测量学要求。结论CISJ项目平均难度处于中等偏易,有一定的鉴别力。

Objective： To analyse the difficulty and the discrimination of items Chinese Intelligence Scale for Junalor（ CISJ ）. Methods： This is based on the scores of a norm sample with 1440 people. The research tries to use the passing rate of each item for analysing the difficulty, and to use the biseril correlation and the discriminatory index for analyzing the discrimination of items. Results ： 1. The sequence on the difficult degree of the items of each sub - scale about the rural version is as the same as the city version, but the rural samples＇ average passing rate （0.57） is a little lower than the rate of city sample （0.61 ） ; the average passing rate of totle sample is 0.59. 2. From the correlation analysis between the scores of each item of the sub - scale and totle of their relative sub - scale, the average correlation coefficient is 0.45 - 0.46. 3. The average passing rate gap of oupan / rural sample and the overall sample is 0. 37,0. 36 and 0.36. Conclusion： The overall average of difficulty of CISJ items is in the middle level approaching to easiness and it has certain function to discriminate intelligence foe the junaior in China.