 The formers are favourable to the involuntary nature of a post-traumatic stress disorder, thereby defending the uncontrollable nature of a defendant’s actions.This approach focusses on the personal culpability of the individual defendant , thus disregarding any possible social implications.On the other hand, instrumentalists do consider such broader implications, viewing the law as an object of social change and claiming to promote the general welfare by refusing to recognise legal claims damaging the integrity of the legal.