What/why? Prompted by a couple of my research projects, I’ve been fitting a lot of ordinal models, lately. Because of its nice interpretive properties, I’m fond of using the cumulative probit. Though I’ve written about cumulative logit ( Kurz, 2020b, sec. 11.1) and probit models ( Kurz, 2020a, Chapter 23) before, I still didn’t feel grounded enough to make rational decisions about priors and parameter interpretations. In this post, I have collected my recent notes and reformatted them...