Generally it is best to send questions like this to the
R-SIG-Mixed-Models@R-project.org mailing list (see instructions at
https://stat.ethz.ch/mailman/listinfo/r-sig-mixed-models).  Many of
those who read that list can reply and often much faster than I am
able to.

To be able to answer this question it would be necessary to know the model
formula that you used and the structure of your data as represented in R.
Please reply to the list with the output of

str(myData)  # replace myData by the name of your data.frame

and the call to lmer.


On Fri, Jan 10, 2014 at 9:14 AM, Elin Renborg <elin.renborg@bioenv.gu.se>wrote:

>  Dear Douglas Bates,
>
>  I wonder if you could help me… I get the output below when I use the
> lmer function from the lme4 package, and I don’t seem to find an answer to
> what dam.1 and sire.1 stand for.
>
>   The experimental design is as follows (with one family missing):
>
> 6 matrices of 9 crosses (3 males x 3 females) yielding 53 families (one
> missing).
>
>  All families were exposed to 5 different salinities yielding 265
> observations.
>
> Male/sire and female/dam effects are treated as random and matrix and salt
> as fixed.
>
>
>
> Random effects:
>
>  Groups    Name        Variance  Std.Dev.
>
>  salt.dam  (Intercept) 1.073e-03 3.275e-02
>
>  salt.sire (Intercept) 5.051e-05 7.107e-03
>
>  dam       (Intercept) 2.313e-19 4.810e-10
>
>  sire      (Intercept) 1.943e-10 1.394e-05
>
>  dam.1     (Intercept) 2.249e-18 1.500e-09
>
>  sire.1    (Intercept) 7.323e-05 8.558e-03
>
>  Residual              6.299e-03 7.936e-02
>
> Number of obs: 265, groups: salt:dam, 90; salt:sire, 90; dam, 18; sire, 18
>
>
>
> Fixed effects:
>
>             Estimate Std. Error t value
>
> (Intercept)  0.15144    0.01336   11.34
>
> matrixF2     0.07083    0.01530    4.63
>
> matrixF3    -0.03134    0.01525   -2.06
>
> matrixF4     0.04096    0.01529    2.68
>
> matrixF5     0.03625    0.01527    2.37
>
> matrixF6     0.03222    0.01522    2.12
>
> salt27.5     0.63279    0.01219   51.90
>
> salt30.5     0.61029    0.01220   50.01
>
> salt33.5     0.02474    0.01223    2.02
>
> salt36.5    -0.17741    0.01228  -14.45
>
>
>
> Best regards,
>
> Elin Renborg
>      __________________________________
>
>  Elin Renborg, PhD Student
> Dept of Biological & Environmental Sciences - Tjärnö
> University of Gothenburg
> SE-452 96 Strömstad, Sweden
>
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