ArticleBehavior research methods2026
Modeling truncated and censored data with the diffusion model in Stan.
Article in Behavior research methods, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Reaction time data in psychology are frequently censored or truncated. For example, two-alternative forced-choice tasks that are implemented with a response window or response deadline give rise to censored or truncated data. This must be accounted for in the data analysis, as important characteristics of the data, such as the mean, standard deviation, skewness, and correlations, can be strongly affected by censoring or truncation. In this paper, we use the probabilistic programming language Stan to analyze such data with Bayesian diffusion models. For this purpose, we added the functionality to model truncated and censored data with the diffusion model by adding the cumulative distribution function for reaction times generated from the diffusion model and its complement to the source code of Stan. We describe the usage of the truncated and censored models in Stan, test their performance in recovery and simulation-based calibration, and reanalyze existing datasets with the new method. The results of the recovery studies are satisfactory in terms of correlations (
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