Hysteresis says you take a different path backward than forward. Like, you overestimate debt capacity, then underestimate, then ...; You do the ups and downs, but go up in luxury, down in defeat.
Here the author says the hysteresis is an extra cost, and a damage. But he talks about going down in the abstract, that has to be compared to the trip up. After, we been up and downing forever. Then the issue, is if you make a soft down, do you then limit the upside? Dunno, he should have mentioned a the complete model in the abstract. Plus, a negative return is a finite positive possibility, everywhere.
Abstract: Empirical studies support the hysteresis hypothesis that recessions
have a permanent e§ect on the level of output. We analyze the implications
of hysteresis for Öscal policy in a DSGE model. We assume a
simple learning-by-doing mechanism where demand-driven changes in
employment can a§ect the level of productivity permanently, leading
to hysteresis in output. We show that the Öscal output multiplier is
much larger in the presence of hysteresis and that the welfare multiplier
of Öscal policyñthe consumption equivalent change in welfare
for one dollar change in public spendingñis positive (negative) in the
presence (absence) of hysteresis. The main beneÖt of accommodative
Öscal policy in the presence of hysteresis is to diminish the damage of
a recession to the long-term level of productivity and, thus, output.
No comments:
Post a Comment