Search results for " optimism assessment"

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Item Response Theory Analysis of the Life Orientation Test-Revised: Age and Gender Differential Item Functioning Analyses

2015

This study is aimed at testing the measurement properties of the Life Orientation Test-Revised (LOT-R) for the assessment of dispositional optimism by employing item response theory (IRT) analyses. The LOT-R was administered to a large sample of 2,862 Italian adults. First, confirmatory factor analyses demonstrated the theoretical conceptualization of the construct measured by the LOT-R as a single bipolar dimension. Subsequently, IRT analyses for polytomous, ordered response category data were applied to investigate the items’ properties. The equivalence of the items across gender and age was assessed by analyzing differential item functioning. Discrimination and severity parameters indic…

AdultMaleAgingCharacteroptimism assessmentAdolescentPersonality InventoryPsychometricsDispositional optimismLife Orientation Test-Reviseditem equivalencebehavioral disciplines and activitiesDevelopmental psychologyAge and genderYoung AdultSex FactorsLife orientationOrientationItem response theoryHumansdifferential item functioningApplied PsychologyAgedAged 80 and overOptimismReproducibility of Resultsitem response theoryMiddle AgedDifferential item functioningClinical PsychologyItalyLife orientation testFemalePsychologyLife Orientation Test-Revised optimism assessment item response theory differential item functioning item equivalence
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