The National Institutes of Health have established a new policy to recognize multiple principal investigators when appropriate in research project grants and selected other mechanisms. The new policy is intended to encourage formation of multidisciplinary research teams. Earlier this year, the NIH began a pilot program to recognize multi-PIs in certain research areas; the new policy extends this option broadly to new research grant applications with receipt dates beginning in February, provided that applications are submitted electronically and meet other specifications. The AAMC has commented extensively on the NIH's proposal to develop a multi-PI policy. While the AAMC endorsed, in principle, recognition of multi-PIs, its central concern was that the critical role served by principal investigators -- and their accountability -- not be diminished or attenuated. The resulting NIH policy positively addresses this concern with a definition of principal investigator that closely resembles the AAMC recommendation. The AAMC also strongly recommended that the NIH include in its databases all investigators who play key roles on a research project; the NIH notice states that such revisions are now in process. For more information, please visit the NIH website.