Decision Making 1 General mixture item response models 1 Humans 1 IRTree models 1 Item response theory 1 Likert scales 1 Measurement invariance 1 Mixture modeling 1 Models, Statistical 1 Psychometrics 1 Response styles 1 Set (Psychology) 1 Task Performance and Analysis 1 Test Taking Skills 1 Weights and Measures 1 decision making 1 human 1 psychology 1 psychometry 1 set (psychology) 1 standard 1 statistical model study skills 1 task performance 1