Excel macro for Thurstonian IRT model

Here you can download supplementary materials for the article

Brown, A. & Maydeu-Olivares, A. (2012). Fitting a Thurstonian IRT model to forced-choice data using Mplus. Behavior Research Methods, 44, 1135–1147. DOI: 10.3758/s13428-012-0217-x (use this link to download a PDF)

In this article, we provide a step-by-step tutorial for coding forced-choice responses, specifying a Thurstonian model for the design used, assessing model fit and scoring people. Estimation and scoring is performed using Mplus, and on this page I provide a straightforward Excel macro that writes out Mplus syntax for any forced-choice design. Armed with the provided tools, using a forced-choice design is almost as easy as using rating scales.

  • Excel macro automates Mplus syntax creation for both Thurstonian IRT (first-order) and Thurstonian factor models (second-order), and for both one-dimensional and multi-dimensional designs
  • User Guide helps specify the desired comparative design in the Excel macro
  • Supplementary data and Mplus scripts for numerical examples in the article can be used as templates for building and testing your own models

All materials are FREE to download. Please supply your name, email address and reason for downloading. This will help me monitor the impact of my research. Thank you.

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