Free Will, Science, and Criminal Law: Toward the Humanization of the Criminal Justice System in the 21st Century
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Abstract
The advancement of neuroscience and psychiatry has shifted the debate on free will from the metaphysical to the empirical plane, posing a direct challenge to the principle of culpability inherent in retributive criminal law. This article critically analyzes the tension between biological determinism and criminal responsibility, examining the experiments of Libet and Soon, as well as the incompatibilist and compatibilist philosophical traditions. It argues that empirical evidence does not destroy criminal responsibility but rather demands its reformulation from a naturalized compatibilism: culpability no longer requires metaphysical free will, but rather the capacity for practical agency and responsiveness to reasons. The article concludes that science must operate as a precision tool to individualize penalties and orient the system towards preventive and rehabilitative purposes, abandoning the retributive fiction.
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