R v Hejabian

In the matter of R v Hejabian, the defendant was convicted of murder and the sole issue for determination was whether his mental condition substantially impaired his responsibility for his actions. The case was heard by the High Court of Australia. The defendant was found guilty of murder at the trial and the primary legal issue was whether his mental condition, which was found to be a significant factor, warranted a reduced sentence due to substantial impairment.

The court considered whether the defendant's mental condition, which included a diagnosis of antisocial personality disorder, substantially impaired his ability to understand the nature and quality of his act or to know it was wrong. The court examined whether the mental condition resulted in an abnormality of the mind that substantially impaired his responsibility for his actions. The court noted that the defendant's ability to form intent and understand the consequences of his actions was not entirely negated by his mental condition.

The court concluded that although the defendant's mental condition was a mitigating factor, it did not substantially impair his responsibility to the extent that it warranted a significantly reduced sentence. The court held that the defendant was still capable of forming the intent to commit murder despite his mental condition. Therefore, the court upheld the sentence of life imprisonment imposed by the lower court, with a non-parole period of 20 years. The defendant's appeal was dismissed.