Multi-level Rasch Model Per Douglas Bates' paper

To be clear,  from each model in my original post in this thread (i.e., m1
& m2) I just want a set of data.frames containing difficulty of each item
per its 'id', and 'item_type'?

Also, I want a set of data.frames containing person ability of each person
per their 'id', and 'item_type'?

Many thanks,
Simon

On 2020-05-13 12:41 -0400, Ben Bolker wrote:

If you change that last line to
lme4::glmer() it works fine.

In the early days lmer() specified with a
family argument would automatically convert
(internally) to a glmer call, but we shut
that off in a recent release.

Indeed it does work now!  Thanks!

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