Abstract
Four fundamental and inter-related points must be borne in mind when discussing existing or prospective legislation on the treatment of mentally-sick offenders:First, the basic misconception in regard to the true nature of the issue of criminal insanity; secondly, the long-standing conflict between the legal and medical professions in regard to this issue, and the need to shift the centre of the conflict from the substantive to the procedural levels where considerable progress towards close cooperation has already taken place; thirdly, the inter-relationship of the procedural and substantive levels and the great power which the former is capable of wielding over the latter; and fourthly, the effects of the typical, traditional modes of procedure and trial techniques of individual countries on their existing laws and on future legislative progress.The dual nature of the problem of the mentally-sick offender has been the source of much confusion. The substantive tests of criminal responsibility predicated on the mental condition of the accused at the time of the offence have been confused with the distinct problem of the modes of ascertaining his mental condition before, during or after criminal trial, and the setting up of machinery for disposal or treatment.

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