` fit >> fit.txt`

This exports the fit for each generalised item (i.e., the default design matrix). Each row is an item, and this is the same as the fit statistics shown in the "show file".

Fit statistics for item pairs, would show you the fit of these two items, relative to the rest of items in the model. This kind of analysis is typically used to interrogate whether pairs of items belong together (e.g., to assess dimensionality or dependence). This would look like:

` fit 1-2:3-4 ... >> fit.txt`

(that is, the fit of the sum of items 1 and 2 in the default design matrix, relative to the rest of the items)

More complex fit analysis can be done by importing a custom design matrix:

https://conquestmanual.acer.org/s4-00.html#fitmore complex