Dispersion parameter calculation for Poisson glmer

Rolf Turner <r.turner at ...> writes:

On 02/28/2013 11:57 AM, Douglas Bates wrote:

As you know, my opinion is that you can approximate it [the overdispersion

parameter] however you want

because it doesn't exist 

I would like to nominate this as a fortune!

It's more likely to happen if you contact Achim Zeleis,
the maintainer of the fortunes package ... I don't think
he follows this list.

  Ben Bolker