CogPrints (University of Southampton) · 2013 · 17 citations · 0 references
PsychopathologyMeasurementGeneralizability TheoryItem Response TheoryEducationPsychometricsClassical Test TheoryPsychologySocial SciencesTemporal DynamicApplied MeasurementFactor AnalysisConstruct ValidityGerman SamplePsychological EvaluationStatisticsPsychiatryTest DevelopmentValidity TheoryForecastingGerman VersionPersonality PsychologyTime PerspectiveTechnologyPersonality SciencePsychological Measurement
The present study assesses the psychometric properties of the Zimbardo Time Perspective Inventory (ZTPI) in a German sample of N = 160 individuals. The five subscales (PastNegative, Present-Hedonistic, Future, Past-Positive, and Present-Fatalistic) measure different dimensions of the Time Perspective. The German version of the ZTPI proves to be internally consistent and reliable in retests, except for the Future Scale. Retest reliability for a subsample (N = 25) indicates a stable measurement of the scales. The Zimbardo and Boyd’s (1999) factor structure could not be replicated satisfactory. Correlations with conceptually related tests (IPC, HAKEMP, and HEIPI) indicate a fair degree of construct validity within the framework of classical test theory. The fit according to a Rasch model was not successful.