[R-sig-ME] Anomalous results with glmer().

[Ben Bolker]

  Very useful observation.  Thanks.

On 14-05-27 10:49 PM, David Duffy wrote:
> On Wed, 28 May 2014, Rolf Turner wrote:
> 
>> Some months back I sent an inquiry to this list concerning the
>> analysis of some linguistics data with which I am involved.
>> essentially zero.  Which is silly.
>>
>> If I fit the same model using lme4 version 1.1-7 (and ignore the
>> warning about failure to converge) I get sensible looking estimates of
>> the variances of the random effects, but an impossibly wrong estimate
>> of at least one of the fixed effect coefficients.  (The estimate says
>> that the success probability is larger for phoneme type "Mclus" than
>> it is for the baseline type "Fclus".  However a raw tabulation show
>> that the success probability for Mclus is much, much smaller than for
>> Fclus.
> 
> FWIW,
>                   MClus
> glm               -2.6950  (0.10455)
> 
> glmer (+Stud)     -2.74464 (0.10536)
> glmer (+Words)     0.36826 (0.19783)
> glmer (+S+W)       0.33574 (0.19981)
> 
> glmmML (+Stud)    -2.7444 (0.10546)
> glmmML (+Words)    0.3683 (0.19816)
> 
> It's words that will always get you into trouble...
> 
> | David Duffy (MBBS PhD)
> | email: David.Duffy at qimrberghofer.edu.au  ph: INT+61+7+3362-0217 fax:
> -0101
> | Genetic Epidemiology, QIMR Berghofer Institute of Medical Research
> | 300 Herston Rd, Brisbane, Queensland 4006, Australia  GPG 4D0B994A
> 
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