Message-ID: <loom.20121011T140349-523@post.gmane.org>
Date: 2012-10-11T12:07:33Z
From: Ben Bolker
Subject: random as fixed effect
joana martelo <jmmartelo at ...> writes:
> I?m modeling fish activity data with a gaussian distribution for scores
> obtained from Principal Component Analysis. My explanatory variables are
> group size, fish length, temperature and year. Because year has only two
> levels I know I can?t use it as a random effect. However, do you think that
> considering year a fixed effect will inflate the effect of the other
> explanatory variables?
No. On the basis of what you've told us, using year as a fixed
effect seems perfectly sensible. You might want to check whether
there are important interactions between year and the other explanatory
variables ...
(Your title seems a bit odd.)
Ben Bolker