
HRPP Education
CITI Registration and Course Completion
Each Learner Group has a curriculum designed to address a researcher’s specific role in human subjects research. After
logging onto the CITI website, Question 1 will ask you to select a Learner Group that is compatible with your research
activities.
Investigators (Principal and Co-Investigators) and Key Personnel should take either:
:: Group 1 – Biomedical Research
-or-
:: Group 2 – Social Behavioral Research
Non-Key Personnel should take:
:: Group 5 – Non-Key Personnel
Investigators who conduct ONLY Exempt Research OR Research Personnel who do
not interact with subjects should take:
:: Group 4 – Exempt Research Only
Confused About Your Role in the Research Project?
Review the definitions below to determine your role in the research project.
Principal Investigator (PI) – The scientist or scholar with primary responsibility for the integrity, design, conduct, and
analysis of a research project that is eligible to serve as such at Purdue University.
Co-Investigator – With regard to human subjects research projects at Purdue University, a co-investigator has PI status but
is not acting as PI on the human subjects protocol. A co-investigator should be listed as key personnel on the human
subjects protocol application.
Key Personnel – Members of a research team who contribute in a substantive way to the scientific/scholarly development or
execution of a project. This includes the PI, co-investigators and can include students and any permanent staff devoting a
significant amount of their effort to a single project or the conduct of human subjects research overall.
Non-Key Personnel – Research Personnel who interact with human subjects but are not key personnel in the sense that they do
not contribute in a substantive way to the scientific/scholarly development or execution of a project. For example, such
personnel may assist in data collection or consenting subjects, but are always under supervision of the principal investigator
and/or key personnel and do not act independently in the execution of the research project.
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