I applied online. The process took 1 week. I interviewed at UCLA (Los Angeles, CA) in Jan 2017
Interview
Questions with lab director in determining researching strengths and goals and which project would best fit your interests and help you in your career. Also, usually a tour of the lab to help you figure out layout. Team members may or may not be present during interview
I have three rounds of interviews by the different people asking questions about research experiences and interests. They also asked why chose this school. They are really nice and the interview is not very hard.
I applied online. I interviewed at UCLA in Jun 2013
Interview
they didn't ask me anything. most of it was just were you interested in so and so's research. i think the profs were trying to recruit us and nobody was rejected during the "interview"