what is the difference between (i) triple diffindiff (ii) and heterogeneity with diff in diff

[Johan list]

Hello everyone and thank you for your responses.


I'm implementing a diff in diff and want to show how my policy affected differently two groups of agents (heterogenous effect)

my diff in diff equation: Y = treat x post
in stata: Y = i.treat##i.post

now, the heterogeneity;

in stata: Y = i.treat##i.post##i.moderateur

is that correct?

I'm not sure I understood what is different from a triple diff in diff and heterogeneity analysis.

thanks again for your help

[Maxence Morlet]

This paper should help you: https://papers.ssrn.com/sol3/papers....act_id=3582447