Support

Vector Psychometric Group, LLC has compiled examples, a list of frequently asked questions, and a User’s Manual. If you have a question not answered in the supporting materials please contact flexMIRT® support at flexMIRT@VPGCentral.com.

Syntax Examples Version 3

  • All Examples
  • 2.1 2PL Calibration Syntax
  • 2.2 Single Group 3PL Calibration Syntax
  • 2.3 3PL EAP Scoring example
  • 2.4 3PL ML Scoring example
  • 2.5 Graded Model Combined Calibration and Scoring Syntax with Recoding
  • 2.6 1PL Calibration and Scoring with Response Pattern Data
  • 2.7 Nominal Model Calibration
  • 2.8 Nominal Model Calibration 2
  • 2.9 Generalized Partial Credit Model
  • 2.10 Rating Scale Model with Trend Contrasts
  • 2.11 Rating Scale Model with Triangle Contrasts
  • 3.1 2-Group 3PL Using Normal Priors with EAP Scoring
  • 3.2 2-Group 3PL with Empirical Histogram
  • 3.3 2-Group 3PL MAP Scoring from Parameter Estimates
  • 3.4 2-Group 3PL Summed Score to EAP Conversion Table
  • 3.5 DIF: Test All Items
  • 3.6 DIF: Test Candidate Items
  • 3.7 Multiple Group Multilevel Model
  • 3.8 Multilevel Model with Covariates
  • 4.1 EFA with Oblique CF-Quartimax Rotation
  • 4.2 EFA with Target Rotation
  • 4.3 Confirmatory MIRT Model with Correlated Factors – Graded
  • 4.4 Bifactor Structure – Nominal Model
  • 4.5 Bifactor Structure – 2PL
  • 4.6 Testlet Model – 2PL
  • 5.1 MH-RM: Confirmatory MIRT Model
  • 5.2 MH-RM: EFA
  • 5.3 MH-RM: Multilevel MIRT Model
  • 5.4 MH-RM: Fixed Effects Calibration
  • 6.1 Simulation – Graded Model Syntax Only
  • 6.2 Simulation – Graded Model Using PRM File
  • 6.3 Simulation – 3PL Model Normal Population
  • 6.4 Simulation – Empirical Histogram Prior
  • 6.5 Simulation – Bifactor Structure From Existing Parameter File
  • 6.6 Simulation – DIF and Group Mean Differences
  • 6.7 Simulation – Multilevel, Multiple Group Model with Bifactor Structure and Covariates
  • 7.1 C-RUM Model Fit To Simulated Data
  • 7.2 DINA Fit to Simulated Data
  • 7.3 DINO Fit to Simulated Data
  • 7.4 Testlet Structure with DINA model
  • 7.5 Rupp, Templin, & Henson – Example 9.2
  • 7.6 Rupp, Templin, & Henson – Example 9.2 without D group
  • 7.7 de la Torre Subtraction Syntax

Plotting Examples