A colleague recently made the argument that interaction terms in logistic
regression are uninterpretable, citing Ai & Norton (2003) Interaction terms
in logit and probit models. On reading the paper, it seems to make the
weaker claim that interaction terms of continuous predictors may be
calculated incorrectly in 2003-era STATA, and that one should take care to
calculate them correctly.

But this did make me wonder whether there are any issues in interpreting
interpreting interaction terms for 'binomial' models in lmer. Can anyone
comment?

Josh

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