[R-sig-ME] Observation-level random effects

Shahinur, Islam @h@h|nur@|@|@m @end|ng |rom mun@c@
Mon Apr 12 13:40:22 CEST 2021

Hello David,

Thank you for the reply (also thanks to Thierry).

You are right- I was trying to see paternal (Male.ID; 42 levels out of 103
observations) and maternal (Female.ID; 53 levels out of 103 observations)
contribution, but still getting boundary (singular) fit: see ?isSingular
errors  for development.overall or for some of the other traits (response




Shahinur S. Islam
PhD Candidate, Department of Ocean Sciences
Ocean Sciences Centre, Memorial University of Newfoundland
St. John's, NL  A1C 5S7, Canada
Cell: (+1)709-740-3324; Twitter: @EcoEvoGen

On Mon, Apr 12, 2021 at 4:03 AM David Duffy <
David.Duffy using qimrberghofer.edu.au> wrote:

> > No, they are not the replicates of the same family, but 20 different
> > families under Cross (Population) Farm.NA.
> Dear Shahin.
> Thierry has already answered your question, in that unless you provide a
> within-family standard deviation for each
> "development.overall" or "egg.size" observation, there is no information
> about familial random effects. You can examine paternal
> and maternal contributions, since some of these are repeated across
> families (in your example data),
> but you will not have a lot of power, I fear.

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