RSC_IRF: The IRF of the one-parameter RSC model.

Description Usage Arguments Value

Description

Computes a matrix of response probabilities under one-parameter RSC model, using 2PL model for individual responses.

Usage

1
RSC_IRF(u, parms, theta1, theta2)

Arguments

u

the logit of the weight parameter of the RSC model.

parms

a data.frame with columns parms$alpha and parms$beta corresponding to the discrimination and difficulty parameters of the 2PL model, respectively.

theta1

the latent trait of member 1.

theta2

the latent trait of member 2.

Value

length(w) by nrow(parms) matrix of response probabilities.


peterhalpin/cirt documentation built on May 25, 2019, 1:50 a.m.