Fisher_GRM {cat.dt}

R Documentation

Fisher Information under GRM

Description

Computes the item Fisher Information given an ability level based on the GRM model

Usage

Fisher_GRM(theta_est, item_par, nres)

Arguments

theta_est	ability level
item_par	vector containing the item parameters. First component is the alpha parameter and the next are the beta parameters
nres	number of possible item responses

Value

An integer that represents the Fisher Information value of the specified item given the ability level

Author(s)

Javier Rodriguez-Cuadrado

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