考研北大生课件测量

··定义：“与测量目标有关的真实分数方差与总总分的方差－随机系 误＝与测量目真实分数方总分的方差随机误信JieJieZhong项目分析：难度、鉴别度指数、项目特征曲线测验测量什么一个测验是否测量了它所希望测量的东西测量测验的分数是否精确有效性和真从测验分数中TheStandardsforEducationalandTesting(1999)characterizedvalidityreferringthe“appropriateness,meaningfulness,usefulnessofthespecificinferencesmadefromtestscores.”效度效度表面效度（Facevalidity内容效度（Content预测效度（Predictivevalidity汇聚效度（ConvergentvalidityFaceInfacevalidity,youlookattheface"itseemslikeagoodtranslationoftheconstruct.Thisisprobablytheweakestwaytotrytodemonstrateconstructvalidity，it’suptoyousubjectivefeeling.·Forexample,WhatisMentalContentContentIsthecoverageoftestingmaterialanadequatesampleoftheconstructofHavetocoverStructureoftestshouldbethesameas ContentExample:Example:PaduaCriterionrelatedCanatestpredictacriterionthatCriterionrelatedCanatestpredictacriterionthatisexternaltothetest?CanthetestpredictcriteriameasuredroughlythesameCanthetestpredictcriteriameasuredthetestwas、当我感到怀疑和担忧时，我无法平息直到自己向一位可靠的人反复诉说以后。（没有0，轻度，中度，重度，极重）36、象我所犯的小错误或者心不在焉会导致性的。（0，1，2，3，4）ConcurrentConcurrentvalidityPIandY- PredictivevalidityMacleodandHaganreportedthatthreat-relevantinterferenceonamaskedStrooptask,whereneutralandnegativewordscannotbeconsciouslyperceived,ispositivelycorrelatedwiththetraitanxietyandemotionalvulnerabilitytostressfullifeevents.Subjects:－31Womenawaitingcolposcopy(15womenwholaterreceivedadiagnosisofcervicalAssessment：－ThreatInterferenceonMasked(Modified)StroopResults：TheyfoundthesinglebestpredictorofseriousnessofemotionaldistresswasTIMS.（BehaviourResearchandTherapy,30,151-ConstructConstructinferencesaboutaconstructWhatispartofthe汇聚效度（ConvergentvalidityWhatotherconstructsisitrelated区分效度（DiscriminantvalidityWhatotherconstructsisitNOTrelatedConstructAnongoingInterybetweenhypothesisgeneration,datacollection,andrefiningtheconstructNo“constructvalidationindex”–nosinglevaluethatsummarizesatest’sconstructvalidityPIandPI-WSUR PI-WSUR与Penn州忧虑问卷（PennStateworryQuestionnaire）只有12％的共同方EvidenceofConstructGroup(mean)FactorStudiesofinternalStudiesofprocess(experimental Factor Factor

通过率·通过率·可用于比较不同选择数目的试题之间的难度比CPKPK 依赖与测验的目的、性质和题目形式

项目难度的计算：通过简介:项目通过率（用顺序量表表示难度简介:项目通过率（用顺序量表表示难度项目特征曲线PRNRL2 RL2 PPHPL1(22等距量表的难度指1344为标准差的单位；：常态化Z分数值鉴别鉴别度D＝PExample: 等，心理学报ItemCharacteristicItemCharacteristicCurve,· ·比如：考试题目的Hypotheticalitem ysis(ICC)forasinglemultiple-choiceitem:

Hypotheticalitem ysis(ICC)forasinglemultiple-choiceitem:ProportionProportiongettingitem0F

Student-performance

ProportionProportiongettingitem0F

Perfect (betweenbelow-Candabove-Cstudents) Student-performanceActual

Actual yses:poorItemyses:goodyses:goo