The UK Research and Innovation body (UKRI) has published a study it commissioned examining peer review processes (in the context of evaluating grant proposals, as opposed to peer review of publications), "Review of Peer Review". The announcement and a little background are at

Page not found – UKRI

and a direct link to the report is at

https://www.ukri.org/wp-content/uploads/2023/07/UKRI-060723-Review-of-peer-review-Final-report-revs-v2.pdf

Clifford Lynch Director, CNI