Evaluating Previous Scales IRT results Evaluated 66 items of existing scalesSome very informative itemsMany poor itemsġ3. Study 1: Sample Avg 26yo (SD=10yr)26% High School or less83% Female76% CaucasianRelationships24% Married (avg 6.3yrs)16% Engaged60% Committed datingġ2. Study 1: Method Online survey (N = 5,315)Contents141 satisfaction itemsItems from DAS, MAT, QMI, RAS71 additional items7 anchor scalese.g., neuroticism, hostile conflict, stress2 validity scalesġ0. Study 1: Goals Evaluate current scalesDAS, MAT, QMI, RASIRT in large sampleDevelop CSILarge item poolFactor analysisIRTĩ. DAS-31 (Please indicate the degree of happiness, all things considered, of your relationship.)Ĩ. Evaluating Scales Item Response TheoryUsed to create SAT, GRE, MCATItem by item analysisIf happy, higher responses?If unhappy, lower responses?Requires large samplesEstimates parameters for each itemEstimates parameter for each subjectSample-Independent ResultsĦ. PART 1: Existing Scales Strengths20-30 years of converging results Clearly measure satisfactionLimitations20-30 years oldHeterogeneous contentUnknown noiseĥ. Professor of PsychologyUniversity of Overview PART 1: Development of CSIExisting scalesDevelopment of new scaleCross-sectional validationLongitudinal validationPART 2: Use & Interpretation of CSIAdministrationScoringInterpretationNormsģ. The Couples Satisfaction Index (CSI) Ronald D.
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