# 3 exogenous shocks at a time

**URL:** <https://forum.dynare.org/t/3-exogenous-shocks-at-a-time/1393>\
**Category:** Dynare help (legacy posts)\
**Created:** [19 March 2010 17:07 UTC](https://forum.dynare.org/t/3-exogenous-shocks-at-a-time/1393 "2010-03-19T17:07:44Z")\
**Posts on this page:** 1\
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**Author:** ![mcb2010](https://forum.dynare.org/letter_avatar_proxy/v4/letter/m/ed8c4c/32.png) [@mcb2010](https://forum.dynare.org/u/mcb2010)\
**Post date:** [19 March 2010 17:07 UTC](https://forum.dynare.org/t/3-exogenous-shocks-at-a-time/1393/1 "2010-03-19T17:07:44Z")

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Hi all,  
I am trying to extend the model in Dynare User Guide by Schorfheide through adding a third exogenous shock (risk premium shock) in addition to the monetary and technology shocks. I would like to know if it is OK to have 3 shocks in the model in the sense that I simulate all 3 shocks at a time, in order to end up with the impulse response functions for all 3 shocks at once. While incorporating a third shock into the model, is there anything special I need to watch out, apart from the stochastic process I define for the shock?

Thanks a lot in advance.

Isabel

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