With only one student taking the survey, 70% of them stopped what they were doing and offered assistance. However, when there were two students taking the survey, this number dropped down dramatically. Most noticeably, when the group was two students -- but one of the students was a stooge who was in on it and would always not respond, the response rate of the non-stooge participant was only 7%.

Somebody probably broke their leg next door behind just a curtain, and only 70% of the study subjects would go help? And only 7% would help if another person is in the room and the other person doesn't go? Is anyone else very surprised by how low these numbers are? I would have expected something like 95% and 50%.