# Disable non-centered parameterization in brms

**URL:** <https://discourse.mc-stan.org/t/disable-non-centered-parameterization-in-brms/7184>\
**Category:** brms\
**Created:** [January 7, 2019, 4:05pm UTC](https://discourse.mc-stan.org/t/disable-non-centered-parameterization-in-brms/7184 "2019-01-07T16:05:58Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Dillon\_Fitch](https://avatars.discourse-cdn.com/v4/letter/d/858c86/32.png) [@Dillon\_Fitch](https://discourse.mc-stan.org/u/Dillon_Fitch)\
**Post date:** [February 5, 2019, 6:21pm UTC](https://discourse.mc-stan.org/t/disable-non-centered-parameterization-in-brms/7184/6 "2019-02-05T18:21:04Z")

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Related question. Is there any way to get brms to use a “centered” parameterization? What I mean is no:

transformed parameters {  
// group-level effects  
vector[N\_1] r\_1\_1 = sd\_1[1] \* (z\_1[1]);  
}

just declaring r\_1\_1 in parameters and using directly without scaling by sd\_1. Stan manual suggests this is more efficient in large data settings.

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