What role does the Institutional Review Board (IRB) play in research and why is

What role does the Institutional Review Board (IRB) play in research and why is it important?

Watch this video on Watson and Rayner’s “Little Albert” experiment. What ethical issues does this raise?
What might have been the response of the IRB if Watson and Rayner had submitted this research for review?
What role does an IRB have when it comes to research fraud? Why should we be concerned with research fraud? Refer to these two famous examples of research fraud in your response.
You can read about them here:
• MMR vaccine and autism: Sensation, refutation, retraction, and fraud