plot.regDIF

Performs regularization of differential item functioning (DIF) parameters
in item response theory (IRT) models (Belzak & Bauer, 2020)
<https://pubmed.ncbi.nlm.nih.gov/31916799/> using a penalized expectation-maximization
algorithm.

William Belzak

regDIF

Regularized Differential Item Functioning

plot.regDIF function

<dl><dt>x</dt>
<dd>Fitted regDIF model object.</dd>
<dt>y</dt>
<dd>Unused for plotting regDIF model object.</dd>
<dt>method</dt>
<dd>Fit statistic to use for identifying DIF effects in plot.</dd>
<dt>color.seed</dt>
<dd>Random seed to sample line colors and line types for
DIF effects in plot.</dd>
<dt>legend.plot</dt>
<dd>Logical indicating whether to plot a legend. Default is <code>TRUE</code>.</dd>
<dt>...</dt>
<dd>Additional arguments to be passed through to <code>plot</code>.</dd></dl>

Arguments

Plot function for regDIF function — plot.regDIF

<dl>

<dt>x</dt>
<dd>Fitted regDIF model object.</dd>


<dt>y</dt>
<dd>Unused for plotting regDIF model object.</dd>


<dt>method</dt>
<dd>Fit statistic to use for identifying DIF effects in plot.</dd>


<dt>color.seed</dt>
<dd>Random seed to sample line colors and line types for
DIF effects in plot.</dd>


<dt>legend.plot</dt>
<dd>Logical indicating whether to plot a legend. Default is <code>TRUE</code>.</dd>


<dt>...</dt>
<dd>Additional arguments to be passed through to <code>plot</code>.</dd>

</dl>

plot.regDIF: Plot function for regDIF function

Description

Usage

Value

Arguments