[R-sig-ME] family() in probit-glmer

[Alessandro Moscatelli]

Dear all,

I have a problem using the function family(). I am using lme4 version 1.1-7
running on R 3.1.0
I fit a glmer model with a probit link function:

formula.mod = cbind(Longer, Total - Longer) ~ X * condition + (1 + X|
Subject)
mod1 <- glmer(formula = formula.mod, family = binomial(link = "probit"),
data = datafr)
> mod1
Generalized linear mixed model fit by maximum likelihood (Laplace
Approximation) ['glmerMod']
 Family: binomial  ( probit )
Formula: cbind(Longer, Total - Longer) ~ X * condition + (1 + X | Subject)
   Data: datafr
      AIC       BIC    logLik  deviance  df.resid
 330.1026  348.8775 -158.0513  316.1026       101
Random effects:
 Groups  Name        Std.Dev. Corr
 Subject (Intercept) 1.452885
         X           0.001128 -0.99
Number of obs: 108, groups:  Subject, 6
Fixed Effects:
 (Intercept)             X    conditionB  X:conditionB
  -7.1760859     0.0090841    -0.2190119     0.0001522

However, using the family() function:
> family(mod1)

Family: binomial
Link function: logit

Does anyone has the same problem? Is it a bug? For Now I solved the problem
using:
> summary(mod1)$link
[1] "probit"

Best
Alessandro

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