simMST: Simulated 1-3-3 MST Panel Data

In irtQ: Unidimensional Item Response Theory Modeling

Simulated 1-3-3 MST Panel Data

Description

A simulated Multistage-Adaptive Test (MST) dataset representing a 1-3-3 panel structure, assembled using module-level target test information functions (TIFs) and design constraints similar to those used in the simulation study by Lim et al. (2021).

Usage

simMST

Format

A list containing five internal objects:

item_bank

A data frame of item metadata for the 56 items assigned to the panel (one row per item; columns follow the irtQ item metadata format: id, cats, model, par.1, par.2, par.3).

module

A binary matrix that maps items in the item bank to MST modules. This structure specifies the item-to-module assignment, similar to the modules argument in the randomMST() function from the mstR package (Magis et al., 2017).

route_map

A binary square matrix that defines the MST transition structure, showing module pathways across stages. This corresponds to the transMatrix argument in the randomMST() function in the mstR package.

cut_score

A list of numeric vectors specifying the routing cut scores between MST stages, computed via find_cut() based on TIF-crossing points of the assembled modules.

theta

A numeric vector of ability (theta) values used to evaluate the panel's measurement precision across the latent trait continuum.

This 1-3-3 MST panel includes 7 modules across 3 stages, drawn from 56 unique items (8 per module) with no item shared across modules. Each module contains 8 dichotomously scored items calibrated under the IRT 3-parameter logistic (3PL) model.

Author(s)

Hwanggyu Lim [e-mail]

References

Magis, D., Yan, D., & von Davier, A. A. (2017). Computerized adaptive and multistage testing with R: Using packages catR and mstR. Springer.

Lim, H., Davey, T., & Wells, C. S. (2021). A recursion-based analytical approach to evaluate the performance of MST. Journal of Educational Measurement, 58(2), 154-178.

irtQ documentation built on July 27, 2026, 9:08 a.m.