[R-sig-ME] Rasch with lme4

[Stuart Luppescu]

On 火, 2009-06-09 at 08:04 +1000, Ken Beath wrote:
> The model treats item as a random effect and should be a fixed effect.

Hmm. In Doran, Bates, Bliese and Dowling (2007), the authors treat the
item as random. 

[snip]
> Another question to ask is whether the Rasch model is appropriate. If
> an IRT is more sensible it would cause some problems with the second  
> model.

Sorry, but I don't understand this at all.

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