[R-sig-ME] testing random effect

Afshartous, David DAfshartous at med.miami.edu
Sun Feb 17 23:47:31 CET 2008

If you are testing multiple random effects, the article below might be of interest:
Afshartous, David, and Wolf, Michael (2007). `` Avoiding Data Snooping in Multilevel and Mixed Effects Models,'' Journal of the Royal Statistical Society - Series A, 170: 1035-1059.

-----Original Message-----
From: r-sig-mixed-models-bounces at r-project.org on behalf of Maria Silvina Fenoglio
Sent: Sat 2/16/2008 9:34 AM
To: r-sig-mixed-models at r-project.org
Subject: [R-sig-ME] testing random effect
Hi all, 
  I am trying to test the significance of the random effect in the following model but I didn't find the way to do that.
I think that I can do it with LRT, removing the random effect and comparing both models, but an error appears...
  Can anybody help me with that?

  Silvina Fenoglio

Biol. María Silvina Fenoglio
Centro de Investigaciones Entomológicas
de Córdoba
Edificio de Investigaciones Biológicas y Tecnológicas
Fac. de Cs. Exactas, Fís. y Naturales- 
Universidad Nacional De Córdoba
Av. Vélez Sarsfield 1611-(X5016GCA)
TEL:00-54-351-4334141/4334152 int.418

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