For a test run, the inventors took MIT students and had them do a fake job interview. The researchers then broke the students up into three groups: one got no training from MACH, but watched videos with advice on job interviews; one met with MACH, but didn't get any feedback; and one got the full feedback from MACH. A week later, all three groups went in for another simulated interview, and the students who got help from MACH, the researchers reported, did better, as rated by the people they interviewed with. The other groups didn't appear to change much.