UW Research

Frequently-Asked Questions

What’s the difference between a PD/PI, Multiple PI, a Co-PI, a Co-Investigator, and an Application PI?

PD/PI: When an individual has full responsibility & authority for the project.

Multiple PI: when there is more than one PD/PI with equal responsibility and authority for the project. NIH uses the term Multiple PI and  NSF uses the term Co-PI.

Co-investigators or Co-I: make significant contributions, but do not have overall responsibility and authority for the project. They are NOT considered PD/PIs.

Application PI: SAGE role type on the PI & Personnel when PI on sponsor application differs from the UW PI on the eGC1.

Other Resources:

SAGE Support: