irt_gen {lsasim}

Simulate item responses from an item response model

Description

Creates a data frame of item parameters.

Usage

irt_gen(theta, a_par = 1, b_par, c_par = 0, D = 1)

Arguments

theta

numeric ability estimate.

a_par

numeric discrimination parameter.

b_par

numeric or vector of numerics difficulty parameter(s).

c_par

numeric guessing parameter.

D

numeric parameter to specify logistic (1) or normal (1.7).

Examples

irt_gen(theta = 0.2, b_par = 0.6)
irt_gen(theta = 0.2, a_par = 1.15, b_par = 0.6)
irt_gen(theta = 0.2, a_par = 1.15, b_par = 0.6, c_par = 0.2)