Final answer:
A researcher needs to submit to the IRB if the study involves human subjects, which ensures adherence to ethical guidelines and informed consent.
Step-by-step explanation:
A researcher would need to submit his idea to the university’s Institutional Review Board (IRB) if the study involves the use of human subjects. The IRB is responsible for monitoring research involving human subjects to ensure ethical principles and federal regulations are followed. Whether the research includes taking blood samples, conducting psychological experiments, or distributing surveys, all these activities require IRB approval before beginning. The key aspects that the IRB reviews include minimizing risks to participants, ensuring informed consent, and maintaining privacy and safety throughout the study.