21. The Scottish Law Commission reported in 2004 proposing changes to the law on insanity and diminished responsibility . 22. David Harker, 24, admitted manslaughter in the death of 32-year-old Julie Paterson, on grounds of diminished responsibility . 23. He rejected calls from the victim's parents for a life sentence, arguing that the pair showed diminished responsibility . 24. A conviction would mean the death sentence unless the no-jury court finds diminished responsibility owing to mental instability. 25. "Irresistible impulse " can be pleaded only under the defense of diminished responsibility , not under the defense of insanity. 26. In July 2009, following an appeal, Erskine's murder convictions were reduced to manslaughter on the grounds of diminished responsibility . 27. Nancy Kissel pleaded not guilty to murder, but guilty to manslaughter on the basis of diminished responsibility and provocation. 28. On 18 December 2008, Napper was convicted of the manslaughter of Rachel Nickell on the grounds of diminished responsibility . 29. He was ruled to have acted with diminished responsibility while suffering from stress-related illness attributed to repeated homosexual assault. 30. In November 1975 he was convicted of manslaughter ( due to diminished responsibility ) and sentenced to life imprisonment.
