Ground 2 - His Honour erred by failing to take into account the diminished need for general deterrence on the basis that reduction of his culpability had already been taken into account because the offence of manslaughter attracted a lower sentence than murder
48This ground is concerned with the next paragraph from the remarks on sentence:
"[38] To the extent that it is therefore inappropriate to impose a generally deterrent sentence on the offender, that too, has already been taken into account because his offence attracts a lower sentence".
49The applicant submitted that it was not relevant to the consideration of general deterrence that the applicant was convicted of manslaughter on the basis of substantial impairment. The central question was whether he was the appropriate vehicle to deter others in the circumstances of this offence.
50In addition, this was not a case where the applicant's mental illness increased the need for the protection of society. No finding was made to that effect.
51The Crown submitted that his Honour referred to the fact that mental illness may lessen the need for general deterrence and that this was encapsulated in sentencing for manslaughter instead of murder.
52The expression of this ground of appeal assumes that the judge was required to take into account "the diminished need for general deterrence". But, a mental illness or disability does not automatically lead to a reduction in the weight to be given to general deterrence. The Crown submissions included reference to some well-known decisions of this Court but it is convenient to adopt the encapsulation of the principles conveniently provided by Simpson J in Aslan v R [2014] NSWCCA 114:
[33] This Court has frequently had to grapple with the effect on sentencing (especially with respect to serious or violent crimes) of mental illness, intellectual handicap or other mental or emotional impairment or disability. The compassion and sympathy that such a condition engenders collide with the need for sentences to reflect the objective gravity of the offence in question, the community's interest in general deterrence, and that criminal conduct must be met with appropriate denunciation and retribution. Over the years, the applicable principles have evolved. They were most recently re-stated by McClellan CJ at CL in Director of Public Prosecutions (Cth) v De La Rosa [2010] NSWCCA 194; 79 NSWLR 1 at [177]. They are as follows:
"[Principle 1] Where the state of a person's mental health contributes to the commission of the offence in a material way, the offender's moral culpability may be reduced. Consequently the need to denounce the crime may be reduced with a reduction in the sentence ...
[Principle 2] It may also have the consequence that an offender is an inappropriate vehicle for general deterrence resulting in a reduction in the sentence which would otherwise have been imposed ...
[Principle 3] It may mean that a custodial sentence may weigh more heavily on the person. Because the sentence will be more onerous for that person the length of the prison term or the conditions under which it is served may be reduced ...
[Principle 4] It may reduce or eliminate the significance of specific deterrence ...
[Principle 5] Conversely, it may be that because of a person's mental illness, they present more of a danger to the community. In those circumstances, considerations of specific deterrence may result in an increased sentence ... Where a person has been diagnosed with an Antisocial Personality Disorder there may be a particular need to give consideration to the protection of the public ..." (internal citations omitted, italics added)
[34] It will be observed that none of these principles is stated as absolute. What is recognised is the potential effect, in any given case, of a mental disability. It does not follow that, because an offender suffers from some mental impairment or disability, his or her moral culpability is reduced (principle 1); nor that he or she is an inappropriate vehicle for general deterrence (principle 2); nor that a custodial sentence will weigh more heavily upon him or her (principle 3); nor that the significance of specific deterrence is reduced or eliminated (principle 4). Nor, on the other hand, does it follow that a person with mental impairment is a danger to the community, indicating a need for community protection (principle 5). Too often, the mere fact of mental illness is advanced to this Court as necessarily calling for a more lenient sentence. What the principles spelled out by McClellan CJ at CL do is direct attention to considerations that experience has shown commonly arise in such cases. There is, however, no presumption. It remains necessary for the sentencing court to examine the relevant facts in order to determine whether, in the specific case, the mental condition has the consequence contended for.
[35] A central question (but not the only question) is whether the mental illness or other condition had a causative role to play in the commission of the offence or offences for which the offender is to be sentenced. Counsel who appeared for the applicant accepted that this was the principal issue in this case. If it is concluded that there was a causal connection, then the offender's moral culpability may be reduced (see principle 1). That connection may also warrant lesser attention being paid to the need for the sentence to reflect considerations of general deterrence (principle 2).
53I have reviewed a significant number of cases in this Court over the past 25 years or so that have considered sentencing for substantial impairment manslaughter and it has been consistently held that what Simpson J described as "principle 2" applies. See, for example, R v Troja (Court of Criminal Appeal (NSW), 16 July 1991, unrep); R v Chayna (Court of Criminal Appeal (NSW), 8 June 1993, unrep); R v Barton (Court of Criminal Appeal (NSW), 28 July 1995, unrep); R v Cooper (Court of Criminal Appeal (NSW), 24 February 1998, unrep); Heatley v R [2008] NSWCCA 226; Pitt v R [2014] NSWCCA 70 at [53]-[56] (Simpson J). It follows that the sentencing judge was in error if what he said at [38] of the remarks on sentence must be interpreted as meaning that the mental ill-health of an offender standing for sentence for substantial impairment manslaughter is never relevant to the weight to be given to general deterrence.
54The better view, in my opinion, is that what his Honour said must be seen in context. It is a short paragraph (in fact a single sentence) appearing within a fairly extensive survey of the evidence relevant to sentence which was dominated by a consideration of the applicant's mental condition. His Honour found, in effect, that he could not accept that the applicant's condition was as severe as described by Drs Furst and Westmore. I interpret what his Honour found as being to the effect that the condition was sufficient to persuade the jury that the partial defence was made out and if it was worse than that it was barely so. In these circumstances, his Honour was not required to find that the applicant was an inappropriate vehicle for general deterrence and thereby give less weight to it. I would not uphold this ground.