如何控制和提高英语诊断性测试的合理性

,如何控制和提高英语诊断性测试的合理性,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,如何控制和提高英语诊断性测试的合理性,2015.8.15,吴江高级中学 吴国栋,1,主要内容,提高英语语言测试合理性的必要性,英语语言测试的分类,控制和提高英语诊断性测试合理性的一些建议及实践,总结,2,提高英语语言测试合理性的必要性,学生学习兴趣及动力,教师教学的有效性及针对性,3,With our knowledge_ practice, we can make contributions to our society.,A. to base on B. basing on C. based on D. base on,Avoid strong acids, bases, oxidizers.,the return to the motherland,the transfer o f sovereignty,4,英语语言测试分类,能力测试：TOEFL,学业成绩测试：期中、期末考试,诊断测试：摸底考试、单元测试、随堂考查、考前测试,分班测试(placement test),禀赋测试：高考,5,控制和提高英语诊断性测试合理性的一些建议及实践,树立意识,选用真实、地道的语言素材，除了学术，还应该生活,确保试题的信度和难度和区分度，杜绝繁、偏、旧的试题,6,教育测量与评价的信度,信度的定义,反映测量结果的一致性或稳定性,一致性侧重反映不同量表反映同一现象的相似程度,稳定性指在不同的时间点用相同的量表对相同的研究对象进行测验，所得结果的相似性,一致性为内在信度，稳定性为外在信度,7,教育测量与评价中题目（项目）的信度,信度高低对照表,可信度,cronbach a 系数,不可信,cronbach a 系数0.3,勉强可信,0.3 cronbach a 系数0.4,可信,0.4 cronbach a 系数0.5,较可信（最常见）,0.5 cronbach a 系数0.7,很可信（次常见）,0.7cronbach a 系数0.9,十分可信,0.9cronbach a 系数,8,教育测量与评价中题目（项目）的难度,难度的含义,难度是指测验项目的难易程度，记为 P,在教育测量中,P正确回答试题的人数,/,参加测验的总人数,9,教育测量与评价中题目（项目）的区分度,区分度的概念,区分度是测验对被试实际水平的区分程度,是测验项目分析的重要内容,是作为评价项目质量、筛选项目的主要指标与依据,通常用D表示，取值范围为1.00至1.00,D越高时，试题的质量越好,10,教育测量与评价中题目（项目）的区分度,区分度对测验的影响,1.区分度与难度的关系,难度（P）,区分度（D的最大值）,1.00,0.00,0.90,0.20,0.70,0.60,0.50,1.00,0.30,0.60,0.10,0.20,0.00,0.00,11,教育测量与评价中题目（项目）的区分度,区分度对测验的影响,2.区分度与信度的关系,D的平均值,信度,0.1225,0.00,0.16,0.42,0.20,0.63,0.30,0.84,0.40,0.915,0.50,0.949,12,总结,诊断性测试是整个高中英语教学的重要环节,树立意识,测试内容要地道、准确、贴近生活,利用成熟的统计方法对试题进行统计，监控试题的难度，测量试题的信度，提高试题的区分度。,13,“Under the Dome”, a smog documentary released by Chai Jing has been viewed more than 17 million times on Youku and has provoked national discussion after going viral online.,柴静发布的“雾霾纪录片”穹顶之下在优酷上已播放超过1700万次，在网上迅速传播后引发了全国的热烈讨论。,14,15,Cones come in three types: red, blue, and green. And each of us has very different ratios of these types. But the different ratios dont seem to have a big impact on our color vision, said Cedar Riener, associate professor of psychology at Randolph-Macon College. I could have a 5-1 ratio of red to green cones, and you could have 2-1, and we could both have similar color sensitivity. 伦道夫-麦肯学院心理学副教授Cedar Riener解释,The dress phenomenon, according to neuroscientist Dale Purves of Duke University, shows how strongly people are wedded to the idea that colors are properties of objects, when they are in fact made up by the brain. 杜克大学神经系统学家Dale Purves,16,B: China Blasts:Causualties in Tianjin port city explosions,T: Massive Explosions Rock Chinese City,C: Explosion rocks Chinas Tianjin; 17 killed,G: Explosions in Chinese city of Tianjin kill at least 17 and injure hundreds,The Peoples Daily and CCTV, Chinas state-owned broadcaster, reported that 17 people were killed. CCTV and Xinhua said that more than 400 people were injured, while the Peoples Daily said some 315 were hurt, 32 of them critically.,17,