sysToItemDifDf

Creates a data frame that includes the common item parameter estimates from two (or more)
system files (e.g., a DIF analysis).

Extends 'ACER ConQuest' through a family of functions
designed to improve graphical outputs and help with advanced analysis
(e.g., differential item functioning). Allows R users to call
'ACER ConQuest' from within R and read 'ACER ConQuest' System Files
(generated by the command `put` <https://conquestmanual.acer.org/s4-00.html#put>).
Requires 'ACER ConQuest' version 5.40 or later.
A demonstration version can be downloaded from <https://shop.acer.org/acer-conquest-5.html>.

Dan Cloney

conquestr

An R Package to Extend 'ACER ConQuest'

Ray Adams

sysToItemDifDf function

<dl><dt>listOfSysFiles</dt>
<dd>A list of system files returned from conquestr::ConQuestSys</dd>
<dt>mySuffixes</dt>
<dd>a vector of strings specifying the names for the two groups being analysed,
e.g., if the two system files are an analysis of boys and girls, the vector may be <code>c(_male", "_female")</code>.</dd>
<dt>myDims</dt>
<dd>A string specifying if all or specific dimensions should be included. The default is
"all", Specific dimensions are specified by the label "D1" for dimensions 1 etc.</dd></dl>

Arguments

sysToItemDifDf — sysToItemDifDf

<dl>

<dt>listOfSysFiles</dt>
<dd>A list of system files returned from conquestr::ConQuestSys</dd>


<dt>mySuffixes</dt>
<dd>a vector of strings specifying the names for the two groups being analysed,
e.g., if the two system files are an analysis of boys and girls, the vector may be <code>c(_male", "_female")</code>.</dd>


<dt>myDims</dt>
<dd>A string specifying if all or specific dimensions should be included. The default is
"all", Specific dimensions are specified by the label "D1" for dimensions 1 etc.</dd>

</dl>

sysToItemDifDf: sysToItemDifDf

Description

Usage

Value

Arguments

See Also