# Default student\_t priors in brms

**URL:** <https://discourse.mc-stan.org/t/default-student-t-priors-in-brms/17197>\
**Category:** brms\
**Tags:** prior-choice\
**Created:** [July 28, 2020, 8:02am UTC](https://discourse.mc-stan.org/t/default-student-t-priors-in-brms/17197 "2020-07-28T08:02:36Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![martinmodrak](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/martinmodrak/32/133_2.png) [@martinmodrak](https://discourse.mc-stan.org/u/martinmodrak)\
**Post date:** [August 10, 2020, 1:32pm UTC](https://discourse.mc-stan.org/t/default-student-t-priors-in-brms/17197/7 "2020-08-10T13:32:46Z")

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The prior is computed in:

> <https://github.com/paul-buerkner/brms/blob/c2b24475d727c8afd8bfc95947c18793b8ce2892/R/priors.R#L1074>

(for intercept this is called with `center = FALSE`, and the most relevant part is `location_y <- round(median(y_link), 1)` )

Does that answer your question?

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