field test validity study results - wv connections现场测试的效度研究结果wv连接

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1、FieldTestValidityStudyResults:EnglishLanguageDevelopmentAssessmentFinalReportDeliverable—October2004RebeccaKopriva,ProjectDirectorCenterfortheStudyofAssessmentValidityandEvaluation(C-SAVE)UniversityofMarylandCouncilofChiefStateSchoolOfficersLEP-SCASSAmericanInstitutesofResear

2、ch,TestContractorAward#0305198000FieldTestValidityStudyResults:EnglishLanguageDevelopmentAssessmentRebeccaKoprivaDavidE.WileyChen-suChenRoyLevyPhoebeC.WinterTiaCorlissOctober27,2004CenterfortheStudyofAssessmentValidityandEvaluationDepartmentofMeasurement,Evaluation,andStatist

3、icsCollegeofEducationUniversityofMarylandEnglishLanguageDevelopmentAssessment(ELDA)TABLEOFCONTENTSI.BACKGROUND………………………………………………………..................1II.OVERVIEWOFFIELDTESTVALIDITYSTUDIESCONDUCTEDBYC-SAVE………………………………………………………………..…….4A.OverviewofItemAnalyses………………………………………………

4、…..41.EvaluationofItemsusingLatentClassAnalysesandotherRatings..…4a.Contributinganalyses………………………………………………4b.Analysesofgradients………………………………………………6c.Evaluationofitemsusingcontributingdataandgradients………..82.AnalysesofRelationshipsamongDevelopmentLevelofItems,PercentCorrect,an

5、dTeacherRatingofStudents………………….……9B.OverviewofTestScoreAnalyses…………………………………….……….91.RelationshipofELDAwithOtherMethods:TheMultitrait-MultmethodAnalyses…………………………………………...………102.LatentClassAnalysesofTestScores……………………………………11a.DifferencesbetweenLCAandMixedRaschModel……………...1

6、2b.LatentClassAnalysestovalidatethedevelopmentalmodelfortestscores……………………………………………………...133.AnalysesofDevelopmentalLevelStructure……………………………14a.AnalysesofaSimplexStructure………………………………….14b.Regressingothermeasuresondevelopmentallevelscores……….16III.RESULTSOFITEMANALYSES………………

7、………………………...........17A.EvaluationofItemsusingLatentClassAnalysesandotherRatings……...…17B.AnalysesofRelationshipsbetweenDevelopmentalLevelofItemsandTeacherRatingofStudents……………………………..……………….25IV.RESULTSOFTESTSCOREANALYSES…………………………………….27A.Multitrait-MultimethodAnalyses……………

8、……………………………….271.ELDAwithOtherMeasures,OverallMTMMAnalyses……………….27a