theta_ll

returns the log of the likelihood of theta, given a vector of
item responses, item parameters.
Note that this is the simple ll - it is the continuing product of the
response probabilities. It includes a hack, that will nudge the raw
response to the first item to adjust for zeros and perfects.
This should be updated to work with adjusted raw scores instead...

internal

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

theta_ll function

<dl><dt>theta</dt>
<dd>a scalar value of theta.</dd>
<dt>responses</dt>
<dd>a vector of item responses (used in a call to <code>pX</code>).</dd>
<dt>itemParams</dt>
<dd>a list of item designs (each used in a call to <code>simplef</code>).
Must be of same length as <code>responses</code>.</dd></dl>

Arguments

theta_ll — theta_ll

<dl>

<dt>theta</dt>
<dd>a scalar value of theta.</dd>


<dt>responses</dt>
<dd>a vector of item responses (used in a call to <code>pX</code>).</dd>


<dt>itemParams</dt>
<dd>a list of item designs (each used in a call to <code>simplef</code>).
Must be of same length as <code>responses</code>.</dd>

</dl>

theta_ll: theta_ll

Description

Usage

Value

Arguments