Description Usage Arguments Value
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.
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