I'm new to R, so I apologise in advance if I'm not clear enough or if my question is too naive.
I'm trying to analyse the data from a psycholinguistic study using linear mixed models, and my problem is that it takes hours to run maximal models. R's running and running for hours (even 72), and either nothing happens or I get the 'singular fit' warning. I have three IVs (a 2 x 2 x 3 design) and two DVs (reaction times, and accuracy). There were 35 participants and 40 items per condition.
Can you just tell on the top of their head what the problem might be?
This is how the data is organised in the data file: