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Published online by Cambridge University Press: 09 August 2006
Presentation of evidence from multiple disciplines is the most impressive feature of Nell's article. I have observations and objections, however, about the following issues: (1) violence as a by-product of cruelty; (2) the equation of animal and human cruelty; (3) social psychological evidence contrary to the biological model; (4) whether prevention of cruelty best arises from predispositional or situational factors.