The 1961 Missouri case of a mentally ill defendant Wieter v. Settle further defined the Dusky Standard including,
(1) that he has mental capacity to appreciate his presence in relation to time, place and things; (2) that his elementary mental processes be such that he apprehends (i.e., seizes and grasps with what mind he has) that he is in a Court of Justice, charged with a criminal offense; (3) that there is a Judge on the Bench; (4) a Prosecutor present who will try to convict him of a criminal charge; (5) that he has a lawyer (self-employed or Court appointed) who will undertake to defend him against that charge; (6) that he will be expected to tell his lawyer the circumstances, to the best of his mental ability (whether colored or not by mental aberration) the facts surrounding him at the time and place where the law violation is alleged to have been committed; (7) that there is, or will be, a jury present to pass upon evidence adduced as to his guilt or innocence of such charge; and (8) he has memory sufficient to relate those things in his own personal manner.