NYSentencing

§ 40.15  Mental disease or defect.
In  any  prosecution  for  an offense, it is an affirmative defense that
when the defendant  engaged  in  the  proscribed
conduct,  he  lacked  criminal responsibility by
reason of mental disease or defect.   Such  lack
of  criminal  responsibility  means  that at the
time of such conduct,  as  a  result  of  mental
disease   or   defect,   he  lacked  substantial
capacity to know or appreciate either:
1. The nature and consequences of such conduct; or
2. That such conduct was wrong.