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that it was due to a blackout, blankness, it may be that
his mind was off, by reason of disease of the mind.
Members of the Jury, I don't think the psychiatrist
indicated to you if mental retardation is really a disease
of the mind. But he says it's possible he may have had
some brain injury and this could result in mental retardation.
That's only a possibility. He hasn't given precisely if
there is any real disease of the mind. If there is a defect
in his mind, the defect was the mental retardation.
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However,
in my view the two defences stand or fall on those facts.
The other defence of diminished responsibility I will
consider now.
Diminished responsibility Members of the Jury, is
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another aspect of abnormality of the mind. You can have it
in a case of mental retardation. So you will have to look 15
at the evidence, look at the accused because you too have
to assess him. Not only the psychiatrist. You too have
to assess him to see if his mental retardation has produced
such an abnormality of the mind as to put him in a position where
he : would not be able to have the necessary intent to
complete the offence of murder, because the offence of
murder requires the malice aforethought, the intention
to kill or to do grievous bodily harm. If that abnormality,
is that mental retardation is such that it would deprive
him of the required criminal intent to be able to satisfy
the offence of murder, then Members of the Jury, you will
have to say that the accused may have killed unlawfully
but he did not have the necessary malice, and so the
offence will have to be that of manslaughter. You will
remember Counsel for the accused addressed you very
forcefully. I think you can remember when he exclaimed
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