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Mixed (aka multilevel or hierarchical) models are linear models that include both fixed effects and random effects. They are used to model longitudinal or nested data.

1 vote
0 answers
30 views

Mixed models: Can I include a random effect for a variable that only applies to part of the ...

I conducted an experiment in which students rated sentences and I would like to fit a mixed effects model using lme4. My response variable is RATING (i.e. the judgements given by the students), the tw …
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2 votes
1 answer
206 views

What is the difference between p-values in summary() and p-values given e.g. by emmeans?

I am working on a binomial mixed model. I want to analyse the use of a certain construction by students. My response is CONSTRUCTION (two levels: THAT/NO_THAT). My predictors are both categorical (typ …
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