Thanks so much for the idea! Coincidentally, since I posted the question I have also looked into how to run the contrasts with emtrends, so this is very useful!
Do you have any experience with ROPE and bayes factor obtained from emtrends comparisons?
I have less than 5% of pd inside ROPE, which would mean that I can reject the null value, but at the same time I have a very small BF (<0.1), which if I understand the bayestestR output correctly, this would mean that the mean is 0. These two don’t seem to go hand in hand, so I must be mistaken somewhere.
For reference, I followed the example here: https://discourse.mc-stan.org/t/getting-bfs-for-specific-contrasts-in-categorical-or-ordinal-models/23093