Description Usage Arguments Details Value See Also Examples
Creates and Formats Item Structures for IRT Calibration.
1 | irt.itemstructure(items, anchors, write, form)
|
items |
The list of items to calibrate in IRT calibration names, see irt.createdata) |
anchors |
A table of Anchor Items (see imports.anchors) |
write |
boolean (default = FALSE)- write to .txt file for Winsteps use |
form |
The form code (only necessary if write = TRUE) |
Takes a list of items being calibrated (using the concatenated item name from irt.createdata), and a table of anchor items (see imports.anchors). Merges the two and outputs a list of anchor items- they must be scored on the form, and have an IRT_b value present in the anchor download.
An item structure table
Other IRT Calibration: irt.cleanupresults
,
irt.controlcard
,
irt.createdata
,
irt.itemanchor
,
irt.itemweight
,
irt.personweight
1 | irt.itemweight(ResponseImport, AnchorImport, 1, TRUE)
|
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