separate

 a data frame (or matrix) of item responses 

resp

flag

Splits item response vectors of DIF items into separate group-specific vectors.

 ~kwd1 

 ~kwd2 

Analysis of Differential Item Functioning (DIF) for
dichotomous and polytomous items using an iterative hybrid of
ordinal logistic regression and item response theory (IRT).

Seung W Choi

lordif

Logistic Ordinal Regression Differential Item Functioning using
IRT

separate function

<dl> <dt>resp</dt>
<dd>a data frame (or matrix) of item responses</dd> <dt>flag</dt>
<dd>a vector of DIF flags</dd> <dt>gr</dt>
<dd>a vector of group identifiers</dd></dl>

Arguments

Seung W. Choi &lt;choi.phd@gmail.com&gt;

Author

splits item response vectors of DIF items by group — separate

<dl>

 <dt>resp</dt>
<dd>a data frame (or matrix) of item responses</dd>

 <dt>flag</dt>
<dd>a vector of DIF flags</dd>

 <dt>gr</dt>
<dd>a vector of group identifiers</dd>

</dl>

separate: splits item response vectors of DIF items by group

Description

Usage

Value

Arguments

Author

Details

Examples