performing random effects models

questions concerning analysis/theory using program MARK

performing random effects models

Postby Diego.Pavon » Wed Oct 10, 2012 7:33 am

HI all,

I would like to use random effects models in MARK but I don't really know if I am doing it properly. I am following (I think) the steps in Appendix D.
So, I go for "user specified" and then I put the values of my continuous variable (e.g., snow depth or food abundance index or population density) in the design matrix (before, I specified how many columns and so on).
Then when I add the results to the browser, the random effects models fall under fixed effects. In this case, can I say that random effects models do not improve the fit?

Thank you very much.
Diego.Pavon
 
Posts: 28
Joined: Thu Jul 21, 2011 4:44 am

Re: performing random effects models

Postby cooch » Wed Oct 10, 2012 8:55 am

Diego.Pavon wrote:HI all,

I would like to use random effects models in MARK but I don't really know if I am doing it properly. I am following (I think) the steps in Appendix D.
So, I go for "user specified" and then I put the values of my continuous variable (e.g., snow depth or food abundance index or population density) in the design matrix (before, I specified how many columns and so on).
Then when I add the results to the browser, the random effects models fall under fixed effects. In this case, can I say that random effects models do not improve the fit?

Thank you very much.


Given the question, I would suggest you read Chapter 4 carefully (especially sections on model selection).
cooch
 
Posts: 1654
Joined: Thu May 15, 2003 4:11 pm
Location: Cornell University


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