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  "Description": "Conducts moderated nonlinear factor analysis (e.g., Curran\net al., 2014, <doi:10.1080/00273171.2014.889594>).\nRegularization methods are implemented for assessing\nnon-invariant items. The package includes undimensional factor\nmodels for dichotomous (1PL/2PL), polytomous (GPCM) and\ncontinuous (normal distribution) items.",
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  "License": "GPL (>= 2)",
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