load.functions

This is a helper function used to generate custom hypotheses. See the 'adding_hypotheses' vignette.

Implementation of analytical and sampling-based power analyses for
the Wald, likelihood ratio (LR), score, and gradient tests. Can be applied
to item response theory (IRT) models that are fitted using marginal maximum
likelihood estimation. The methods are described in our paper
(Zimmer et al. (2022) <doi:10.1007/s11336-022-09883-5>).

Felix Zimmer

irtpwr

Power Analysis for IRT Models Using the Wald, LR, Score, and
Gradient Statistics

Rudolf Debelak

Jan Radek

load.functions function

<dl><dt>model</dt>
<dd>character, Desired Model (2PL,3PL, GPCM)</dd>
<dt>multi</dt>
<dd>logical, multidimensional model if TRUE (available for 2PL)</dd></dl>

Arguments

Load IRT model functions and derivatives — load.functions

<dl>

<dt>model</dt>
<dd>character, Desired Model (2PL,3PL, GPCM)</dd>


<dt>multi</dt>
<dd>logical, multidimensional model if TRUE (available for 2PL)</dd>

</dl>

load.functions: Load IRT model functions and derivatives

Description

Usage

Value

Arguments

Examples