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  "Title": "Diffusion IRT Models for Response and Response Time Data",
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  "Date": "2015-08-13",
  "Author": "Dylan Molenaar",
  "Maintainer": "Dylan Molenaar <d.molenaar@uva.nl>",
  "Description": "Package to fit diffusion-based IRT models to response and\nresponse time data. Models are fit using marginal maximum\nlikelihood. Parameter restrictions (fixed value and equality\nconstraints) are possible. In addition, factor scores (person\ndrift rate and person boundary separation) can be estimated.\nModel fit assessment tools are also available. The traditional\ndiffusion model can be estimated as well.",
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      "title": "Conduct a likelihood ratio test on two nested 'diffIRT' models",
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