Formal model comparison would be useful to determine when a more flexible model (e.g., varying preferences) is a better fit to the data. This can be done by adding a log likelihood vector to the generated quantities block (see http://mc-stan.org/loo/articles/loo2-with-rstan.html).
Formal model comparison would be useful to determine when a more flexible model (e.g., varying preferences) is a better fit to the data. This can be done by adding a log likelihood vector to the generated quantities block (see http://mc-stan.org/loo/articles/loo2-with-rstan.html).