Quoted from the email sent to earlier applicants:

If you'd like to be considered for paid remote research work, please do a literature review on the question below and write up your own summary of the most important things you find, including citations, quotes from key paragraphs, and criticism of studies that were poorly designed or showed other problems.

The research question: "What is known about habit change, that should potentially affect the character of our rationality teaching (since we are trying to train people to have different thinking habits)?"