On 28th November OxTalks will move to the new Halo platform and will become 'Oxford Events' (full details are available on the Staff Gateway).
There will be an OxTalks freeze beginning on Friday 14th November. This means you will need to publish any of your known events to OxTalks by then as there will be no facility to publish or edit events in that fortnight. During the freeze, all events will be migrated to the new Oxford Events site. It will still be possible to view events on OxTalks during this time.
If you have any questions, please contact halo@digital.ox.ac.uk
We characterize the instruments which optimally combine a set of exogenous shocks with some non-random measures of shock exposure, building on the framework of Borusyak and Hull (2023). Our characterization has implications for treatments capturing spillovers in social and transportation networks, simulated instruments for policy eligibility, and shift-share instruments. We show how significantly more precise estimates of Medicaid take-up and crowd-out effects can be obtained by combining policy expansion shocks with non-random variation in Medicaid eligibility.
