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random as fixed effect
2 messages · Joana Martelo, Ben Bolker
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