A sentencing court in Western Australia may have regard to the effect of the Sentencing Act 1995 (WA) on the sentence it imposes where the operation of that Act may negate or significantly alter the effect of an order made by the sentencing court or another sentencing court, but it is not proper to mould head sentences with an eye to a particular non-parole period. Voluntary substance abuse is not mitigating, but subsequent steps to address substance abuse may be relevant to specific deterrence. A previously undetected psychiatric disorder (schizoaffective disorder) that contributed to offending may warrant resentencing where it reduces moral culpability and diminishes the weight to be given to community protection.
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