65:(NSF), the PI is the person who takes direct responsibility for completion of a funded project, directing the research and reporting directly to the funding agency. For small projects (which might involve 1–5 people) the PI is typically the person who conceived the investigation, but for larger projects the PI may be selected by a team to obtain the best strategic advantage for the project.
42:. The phrase is also often used as a synonym for "head of the laboratory" or "research group leader". While the expression is common in the sciences, it is used widely for the person or persons who make final decisions and supervise funding and expenditures on a given research project.
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in US biomedical research in 2000. In 2013, this number was 21,511. At the same time, the success rate for an applicant to receive an R01 grant went down from 32% in 2000 to 17% in 2013.
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A co-investigator (Co-I) assists the principal investigator in the management and leadership of the research project. There may be a number of co-investigators supporting a PI.
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38:) refers to the holder of an independent grant and the lead researcher for the grant project, usually in the sciences, such as a laboratory study or a
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In the context of a clinical trial, a PI may be an academic working with grants from
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or other funding agencies, or may be effectively a contractor for a
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NSF Grant Policy Manual 210f 'Definitions: Principal
Investigator'
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NIAID (NIH) 'Glossary of
Funding and Policy Terms and Acronyms'
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working on testing the safety and efficacy of new medicines.
138:"Joint Electronic Submissions Handbook: Co-Investigators"
226:"Principal Investigators as Scientific Entrepreneurs"
101:"NERC RESEARCH GRANTS AND FELLOWSHIPS HANDBOOK"
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224:Casati, A. & Genet, C. (2014).
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53:In the context of United States
110:. February 2021. Archived from
230:Journal of Technology Transfer
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59:National Institutes of Health
30:In many countries, the term
200:10.1126/science.344.6179.24
63:National Science Foundation
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182:Couzin-Frankel, J (2014).
108:UK Research and Innovation
57:from agencies such as the
27:Leader of research project
79:There were 20,458 PIs on
74:pharmaceutical company
32:principal investigator
18:Principal Investigator
251:Science occupations
184:"Chasing the money"
136:Research Councils.
157:See, for example,
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141:. Retrieved
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