Consider me very skeptical on most of these accounts, but it's still an interesting topic. One question:

How do you give these people that kind of input only to the right brain? You're saying that the same persons changed their mind later when they got the input through the other brain, so clearly, there has to be some black vodoo magic at work so that these scientists were able to numb one half of the brain. How did they do that?

Also, when judging someone to be bad or good, then doesn't the act of judging require some interpretation as well - after all, I have to correlate actions with results and then somehow assign "moral points" to that.