[R-sig-ME] lmer nonconvergent: care to run and explain?

[David Duffy]

Is it because Mind is not declared a factor?

dat$Mind <- factor(dat$Mind)
lmer( y3s ~ x1s + x2s + x3s + (x1s | Mind), data = dat)
Linear mixed model fit by REML ['lmerMod']
Formula: y3s ~ x1s + x2s + x3s + (x1s | Mind)
    Data: dat
REML criterion at convergence: 33271.78
Random effects:
  Groups   Name        Std.Dev. Corr
  Mind     (Intercept) 0.6837
           x1s         0.1373   1.00
  Residual             0.6997
Number of obs: 15419, groups:  Mind, 100
Fixed Effects:
(Intercept)          x1s          x2s          x3s
   -0.003039     0.117080    -0.163680     0.055911


| 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