Ethics was entirely beside the point of the experiment. I would say that even though it was aborted early, much can be said about human behaviour with what we have. An interesting aside, in my opinion, would be a comparative study of levels of testosterone in each of the members of the experiment. Dr Sapolsky’s studies of primates have some significant implications concerning testosterone levels, alpha male behaviour, stress and group dynamics. These findings add a bit of a proviso the the the Stanford prison experiment, or at least an additional variable which bears consideration.