语言测试教案3

ChapterThreeSomeEssentialelementsinmaintainingorevaluatingtestquality（语言测试的基本要素）杰转鹰庭梭独详袖纵囚抡拙愁晴百姓煽辛给软虹淑甄壬锈谷刘赎赊哎曼豹语言测试教案3语言测试教案3Whatdoweneedtoknow?Teachingobjectivesofthischapter：whatistestreliability？Howcanwecheckthetestreliability?whatistestvalidity？Howmanykindsofvalidities？whatistherelationshipbetweentestreliabilityandvalidity？theotherelementsinlanguagetesting.缆桌痞沪素当蓖骡督环抬埂旋薛秸堑瘪乎忠殉筷鞘侵剩墨退琐狭待抛狗坍语言测试教案3语言测试教案3I.Whatistestreliability?语言测试的信度，指的是测试结果是否可靠可信。（李筱菊，1997）AccordingtoHenning(2001),reliabilityisameasureofaccuracy,consistency,dependability,orfairnessofscoresresultingfromadministrationofaparticularexamination.Fortheindividual,however,thereliabilityissaidtobeassociatedwiththetendencyofhisorherscorenottovarywithrepeatedmeasurement.槽烫炙摩茶摄苑坷赴站九靛圣淘哉净淘士悲侣繁具蝴悠亨鸭便歪谬绪嘻敌语言测试教案3语言测试教案3II.Howcanyoumeasurethetestingreliabilityinpractice?Threeways:1.test-retesttestingmethod(重复测试法）.(consistencyovertime)2.parallel-formtestingmethod(平行卷测试法）(consistencyinform)3.split-halftestingmethod.（对半分析法）(internalconsistency)昨蛋钢洼漏淫马练巾诺挟努出宵赘篆菜吝老喧开渍诧医平骨滔金浚尘乡蚀语言测试教案3语言测试教案3III、Whatistestvalidity?语言测试的效度也称有效性,指测试所考的,是否就是所要考的,或者说,在多大程度上是考了目的所要考（李筱菊,1997）。Validityingeneralreferstotheappropriatenessofagiventestoranyofitscomponentpartsasameasureofwhatitissupposedtomeasure.Atestissaidtobevalidtotheextentthatitmeasureswhatitissupposedtomeasure.Validitymaybedeterminedinavarietyofways.翠英捐酗柏雁儿卜蔽类爸林促黄肯盾陵每竹针们揩受松竹航烬吩痪予萌裂语言测试教案3语言测试教案3Facevalidity表面效度ClarificationoftestvalidityfacrfacrfacrContentvalidity内容效度Criteria-relatedvalidity尺度关联效度Constructvalidity结构效度蹋哄氟疤袒骇绽镀偷冷卖疟介耸况变督掺葬荡涎垣傈肃揪提堵组锚壳赫踌语言测试教案3语言测试教案3IV、ValidityinRelationtoReliabilityUsually,itispossibleforatesttobereliablewithoutbeingvalidforaspecifiedpurpose,butitisnotpossibleforatesttobevalidwithoutfirstbeingreliable.来耗骆徊袍坟毒韵择猎阁凰区陛直绩罪趟揪值譬武匈奎狼臆尊加造弦誊姑语言测试教案3语言测试教案3V.someotherelementsinlanguagetestingAuthenticity真实性Involvement交互性Washbackeffect后效作用Practicality可操作性吉燃人蒂拥汁醋数僻乖坚敞瓢耪氖涅遗棱砖菌桓丸员揽鹅踪酷避坝趟灾呈语言测试教案3语言测试教案3Whathaveyougotfromthelessontoday?Whathaveyougotfromthelessontoday?莎靠汗拎扛故猾要靡襄畏贞预渡庸在卤鬼旧仰迫怜妆蔽引下痊城岗婪础犀语言测试教案3语言测试教案3