I have recently come across brm_multiple and was curious what the difference between brm_multiple vs simply adding more groups to brm.
For example I want to see how temperature impacts household energy consumption by time and month I would put:
brm(use ~ temp + (1 + temp | time) + (1 + temp | month), data = home1)
However, if I am only interested in times in the afternoon I would use brm_multiple and put:
brm_multiple(use ~ temp + (1 + temp | month), data = time.list)
with time.list being the list of databases with the specific times.
Is this an accurate understanding of brm_multiple vs brm with multiple groups?