Message-ID: <50167D08.9030308@TU-Dresden.de>
Date: 2012-07-30T12:24:40Z
From: Thomas Petzoldt
Subject: comparing 3 levels of fixed factor in lme4
In-Reply-To: <56B68C26-AECD-4FCE-B152-14D022BAF25F@me.com>
On 7/30/2012 1:51 PM, Obermeier Andrew wrote:
[...]
> If you have a specific book to suggest I would appreciate it. I have
> Pinhiero and Bates (2000), Mixed Effects Models in S and S-Plus, but
> have not found specific mentioned of how the t value is derived there
> yet.
You may consider to read Pinheiro & Bates more carefully or consult an
introductory text about model selection and likelihood ratio tests, e.g.:
Johnson, J., G. & Omland, K. S. (2004) Model Selection in Ecology and
Evolution. Trends in Ecology and Evolution, 19, 101-108.
> I admit my ignorance in this area, and apologize if my questions are
> dumb, but nevertheless would appreciate some civility.
>
> Andrew Obermeier
... so please add a little background (or an email signature) so that it
is possible to find an appropriate scientific and/or technical level in
our answers.
Hope it helps
Thomas
--
Dr. Thomas Petzoldt
Technische Universitaet Dresden
Faculty of Forest, Geo and Hydro Sciences
Institute of Hydrobiology
01062 Dresden, Germany
E-Mail: thomas.petzoldt at tu-dresden.de
http://tu-dresden.de/Members/thomas.petzoldt