Dear mixed-list

I am quite new with the lmer program.
I have a data set with binary response (1, 0 and NA for missing trials).

First, I'd like to make sure that it is correct to use the following command
to analyze such data.

model = lmer(resp ~ A + B + C + B:C + (1|sub) + (1|item), data = xxx, family
= "binomial")

Second, for some instances, I got the warning message:
In glm.fit(fr$X, fr$Y, weights = wts, offset = offset, family = family,  :
  algorithm did not converge

and I got extremely small z values and all Pr(>|z|)s = 1.

Is there anything I can do to solve this problem?

Thank you.

Best,
Melissa

	[[alternative HTML version deleted]]


