id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
bae-8464	Cei, Leonardo; Stefani, Gianluca; Defrancesco, Edi	The role of group-time treatment effect heterogeneity in long standing European agricultural policies. An application to the European geographical indication policy	2020	23	.pdf	application/pdf	10974	511	54	This suggests that treatment effect heterogeneity is likely a concern when assessing the impact of GI-type policies. Technical literature warns about the possibility that this eventuality may occur in contexts characterized by a differed administration of the treatment and by the continuation of the treatment over multiple periods, and attrib- utes this fact to the possible occurrence of negative weights in the construction of the TWFE estimate (Abraham and Sun, 2018; Borusyak and Jaravel, 2017; de Chaisemar- tin and D’Haultfoeuille, 2019) when treatment effect heterogeneity is at stake.	cache/bae-8464.pdf	txt/bae-8464.txt