R help - Nov 2014 - Lme4 Package Help!

Hello, all! 

So, as stated in the title, the Lme4 package used to output p-values for the
fixed effects. What happened?!

Literally 2 weeks ago, I ran code, got output with no errors, and had
p-values listed for my fixed effects.

Now, running THE SAME CODE with THE SAME DATASET (nothing at all has
changed, not the data, not my computer, not R, nothing), I do not get
p-values.

I've tried other computers, I've tried resetting R.

Any ideas? I'd really need to get some p-values.

Thank you!

D

Daniel Mello <dmello2 <at> ucmerced.edu> writes:
> 
> Hello, all! 
> 
> So, as stated in the title, the Lme4 package used
> to output p-values for the
> fixed effects. What happened?!
> 
> Literally 2 weeks ago, I ran code, got output with no errors, and had
> p-values listed for my fixed effects.
> 
> Now, running THE SAME CODE with THE SAME DATASET (nothing at all has
> changed, not the data, not my computer, not R, nothing), I do not get
> p-values.
> 
> I've tried other computers, I've tried resetting R.
> 
> Any ideas? I'd really need to get some p-values.
> 
> Thank you!
> 
> D
> 
> 
  Applying my mind-reading skills, I'm going to guess that you are
running anova() and that you had previously loaded the lmerTest package
(which extends the anova() method from lme4 in several ways), and that
now you are loading only the base lme4 package and not the lmerTest 
package.

  If my guess isn't right, then you're going to have to provide more
information.

  Follow-ups to r-sig-mixed-models at r-project.org , please .

  Ben Bolker

Daniel

Lmer has never returned p-values from a model summary; this is a well-known and
discussed issue. You must have post-processed the data in some way to get the
p-values.

Our only way of helping is for you to provide sample code on what you did

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Daniel Mello
Sent: Thursday, November 06, 2014 6:24 PM
To: r-help at r-project.org
Subject: [R] Lme4 Package Help!

Hello, all! 

So, as stated in the title, the Lme4 package used to output p-values for the
fixed effects. What happened?!

Literally 2 weeks ago, I ran code, got output with no errors, and had p-values
listed for my fixed effects.

Now, running THE SAME CODE with THE SAME DATASET (nothing at all has changed,
not the data, not my computer, not R, nothing), I do not get p-values.

I've tried other computers, I've tried resetting R.

Any ideas? I'd really need to get some p-values.

Thank you!

D

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