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Scale linking with PROsetta package2 years ago
Introduction | Load datasets | Response data | Item map data | Anchor data | Preliminary analysis | Basic descriptive statistics | Classical reliability analysis | Dimensionality analysis | Item parameter calibration | Scale linking: IRT-based | Obtain linked item parameters | Fixed parameter calibration method | Linear transformation methods | Calibrated projection (using fixed-parameter calibration) | Making crosswalk tables | Scale linking: score-based | Equipercentile linking: raw to raw | Equipercentile method: raw to T-score | Comparison between linking methods | Raw scores from Scale 2 | PROMIS T-scores based on item response patterns | PROMIS T-scores based on RSSS table from fixed-parameter calibration | PROMIS T-scores based on RSSS table from equipercentile linking | Comparison of RSSS tables
Creating constraints in TestDesign package2 years ago
Introduction | Content balancing with shadow-test approach | Required columns | Column 1: CONSTRAINT_ID | Column 2: TYPE | Column 3: WHAT | Column 4: CONDITION | Column 5-6: LB and UB | Column 7: ONOFF | References
Installing Rsymphony solver package on Mac4 years ago
Introduction | Install SYMPHONY libraries | Modify the Rsymphony solver package to manually point to SYMPHONY libraries | Tell R where Fortran libraries are located | Resources
maat: Multiple Administrations Adaptive Testing4 years ago
Introduction | Assessment Structure | Assumptions | Module Assembly | Content Balancing Algorithm | Item Selection Criteria | How Passages Are Selected | Exposure Control | Overlap Control | Stopping Rule | Ability Estimation | Routing Policy | Cut Scores | Routing Structure | Routing Sturcture Diagram | Test 1 to 2 | Test 2 to 3 | Test 3 | Confidence Interval Routing | Difficulty Percentile Routing | Using the package | Create Assessment Structure | Create an examinee list | Load Module Specification Sheet | Load Cut Scores | Create config object | Run the Main Simulation | Plot the Module Routes | Route Diagram for the CI Transition Policy | Route Diagram for the pool_difficulty_percentile Transition Policy | Scatterplot | Scatterplot for the CI Transition Policy | Scatterplot for the pool_difficulty_percentile Transition Policy | Audit plot | References
Using Split() for creating parallel tests/pools4 years ago
Introduction | Example: discrete items (science pool) | Example: set-based items (reading pool)