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A Seed Usage Issue on Using catR for Simulation and the Solution
1ACT, Inc., Iowa City, IA, USA.
Applied Psychological Measurement
|September 4, 2020
Abstract:
The R package catR is a useful developmental and testing platform for adaptive tests. Developers and researchers have been using catR for their assessments or research projects. However, there is a flaw in catR that can potentially cause misleading results. This article shows the flaw and provides a solution. Suggestions in using seeds for random numbers were also provided.

