A term only used by the National Science Foundation (NSF) and other funding agencies in which it is explicitly stated in their policy. NIH does not allow use of this term or recognize this status. The NSF definition is as follows: “… the individual(s) designated by the proposer, and approved by NSF, who will be responsible for the scientific or technical direction of the project. NSF does not infer any distinction in scientific stature among multiple PIs, whether referred to as PI or co-PI. If more than one, the first one listed will serve as the contact PI, with whom all communications between NSF program officials and the project relating to the scientific, technical, and budgetary aspects of the project should take place. The PI and any identified co-PIs, however, will be jointly responsible for submission of the requisite project reports.

Other Term: Co-PI

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