Description Usage Arguments Value

View source: R/IRF_functions.R

Computes equation 15 of Magis & Raiche (2012). For 2PL, this is also the derivative of the test info.

1 | ```
J(resp, parms, theta)
``` |

`resp` |
a matrix or data.frame containing the binary item responses with |

`parms` |
a named list or data.frame with elements |

`theta` |
the latent trait. |

`length(theta)`

vector of derivatives of test information.

peterhalpin/cirt documentation built on July 15, 2018, 12:42 p.m.

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