Describe the special defences of diminished responsibility and provocation, Comment on the advantages and disadvantages of these defences.

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Nicola Osborne

  1. Describe the special defences of diminished responsibility and provocation
  2. Comment on the advantages and disadvantages of these defences

There are three special defences to a charge of murder which can reduce the offence from murder to manslaughter. These are diminished responsibility, provocation and suicide pact.

Diminished responsibility

Where a person kills or is party to the killing of another, he / she shall not be convicted of murder if he/she was suffering from such abnormality of mind (whether arising from a condition of arrested or retarded development of mind or any inherent causes or induced by disease or injury) as substantially impaired his medical responsibility in doing or being a party to the killing.

Homicide Act 1957 sec 2

The law is that the defendant has to prove that their responsibility was diminished. They have to satisfy a judge and jury of this through the balance of probabilities. Elements which the defence must prove are that when the crime took place the defendant was suffering from abnormality of mind. Abnormality of mind is said to be where the state of mind is different from an average person and would be judged as abnormal by a reasonable person. In R v Seers (1985) the defendant stabbed his estranged wife, and claimed diminished responsibility on the grounds of his chronic depression.

It covers the minds activities from the perception of physical acts to the ability to form rational judgement. Medical evidence is important as well as evidence about the crime and the circumstances in which it took place. It is also important to consider the behaviour of the defendant both before and after the crime was committed. Where alcohol or drugs are factors to be considered by the jury, the jury are normally directed to disregard what in their view, was the effect of alcohol or drugs upon the defendant, since abnormality of mind induced by alcohol or drugs is not generally due to inherent causes or induced by disease or injury and therefore is not in this section. The jury can then consider whether the combined effect of the other matters which do fall in this section amounts to abnormality of mind.

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Provocation

Where on a charge of murder there is evidence on which the jury can find that the person charged was provoked (whether by things done or by things said or both together) to lose his / her self control, the question whether the provocation was enough to make a reasonable man do as he did shall be left to be determined by the jury.

Homicide Act 1957 sec 3

With provocation it is up to the jury to determine if the defendant was provoked. The jury has to take into account things that were said and done ...

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