To what specific type of research efforts is the multiple-PD/PI model aimed and in what instances is the model not appropriate?
The selection of either the single-PD/PI or multiple-PD/PI option should be based on the research proposed, to ensure optimal facilitation of the science. The multiple-PD/PI option is reserved for “team science” and other types of multidisciplinary projects that are not optimally served by the single-PD/PI model. Projects suitable for the multiple–PD/PI model could include as few as two PD/PIs who are jointly responsible for the scientific and technical direction of the project. However, in a project, for example, where the roles of investigators are to provide consultation, collaboration and services (e.g., MRI) instead of sharing in the scientific direction of the project, the traditional single-PD/PI model would be the appropriate model.