Description Usage Arguments Examples
This function performs DIF analysis on items from a multi-stage CAT
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scored.resp |
is a matrix of scored responses. |
person.ability |
is a vector of person ability estimates. |
item.difficulty |
is a vector of item difficulty measures. |
group.info |
is a vector of person demographic variable. |
which.focal |
is the desired focal group. Random group chosen if NULL. |
which.ref |
is the desired reference group. Random group chosen if NULL. |
item.fit |
is a vector of item fit information. Default = NULL. |
item.names |
is a vector of item names. Default = NULL. |
outfilename |
is the name of the desired .csv output file. Default = NULL. |
purification |
run purification? Default = FALSE. |
field.test |
is it a field test? Default = FALSE. |
FTnSize |
if !is.null(field.test) then FTnSize integer scalar must be specified. |
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