stricter standards, the doubts linger.
Meanwhile, Walsh is pushing ahead with his work. At his new Health Research Institute near Chicago, he is beginning to treat delinquent boys for trace element abnormalities. No results yet.
If they are confirmed, notes Raloff, Walsh's findings would raise a host of ethical questions. Can the chemically imbalanced be held ac- countable for their crimes? Should a young child be tested for chemical hints of criminality? What if his test were positive?
"The...