[R] nested random effects

[Berton Gunter]

> 
> An interaction random effect/fixed effect is noted as 
> 
> random ~1|random/fixed
> 
> in your case random =~1|ID/FAM (but I don't uderstand why indiviuals
> withing families are fixed and and families are random, but there you
> go).
> 

1. Fixed effects cannot be nested within random effects. 

2. The "random" specification is backwards: nesting, |g1/g2/g3... , is outer
to inner and so FAM/ID


> Check out Pinheiro and Bates Ch1, especially pg 23 onwards.
> 

Indeed. See the Worker/Machine example on p. 24 for outer to inner nesting.

-- Bert Gunter