Simulate responses from the 1PL, 2PL, or 3PL model
Item parameters: a matrix with one row per item, and three
columns: [,1] item discrimination a, [,2] item difficulty b, and
[,3] asymptote c. Can also use the object returned by
A vector of values of the latent variable ("abilities").
A matrix of responses: persons as rows, items as columns, entries are either 0 or 1, no missing data
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