Abstract
The "knowledge of right and wrong" test of criminal responsi bility, as formulated in the M'Naghten Rule, should be aban doned, and the "causality" criterion, as expressed in the Pike and Durham cases, should be universally adopted. A fresh attack on the constitutionality of the M'Naghten Rule as a violation of the Eighth Amendment prohibition against cruel and unusual pun ishments may be timely and fruitful.
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