<Table> <Tr> <Td> </Td> <Td> The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject . You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate . (July 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject . You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate . (July 2014) (Learn how and when to remove this template message) </Td> </Tr> <P> An ultimate issue in criminal law is a legal issue at stake in the prosecution of a crime for which an expert witness is providing testimony . </P> <P> If the issue is the defendant's mental state at the time of the offense, the ultimate issue would be the defendant's sanity or insanity during the commission of the crime . In the past, expert witnesses were allowed to give testimony on ultimate issues, such as the applicability of the insanity defense to a particular defendant . However, after the 1982 trial of John Hinckley, Jr., the federal rules of evidence were changed . Now in the United States, federal courts and some states have rules of evidence that specifically rule out legal conclusions drawn by expert witnesses in their testimony . However, a large amount of judicial discretion is allowed in how this rule is applied, resulting in an uneven application of rules across jurisdictions . </P>

What is the american psychological association’s stance on ultimate issue testimony