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
Raters often collect payments from their ratees. In many markets, the ratee-pays structure sparks controversy on the conventional wisdom that ratings exist to solve adverse selection and moral hazard problems in trades. I prove that ratings tailored to maximize ratees’ payments fully solve moral hazard by leveraging the presence of adverse selection over time. These optimal ratings are coarse and opaque. I find a tension between rating transparency and economic efficiency, illustrate the implications of optimal ratings for market beliefs and behaviors, and reconcile the conventional wisdom with critiques that ratings add little information to the markets.
