Onsite interview across both campuses. Very dependent on where your program is. This was for the neuroscience PhD program. Your mileage may vary. One on one interviews across two days to show how you might be placed into a variety of different lab and research environments.
Graduate Researcher applicants have rated the interview process at Northwestern University with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 71.9% positive. This is according to Glassdoor user ratings.
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