[36] A fourth, and countervailing, consideration may arise, namely, the level of danger which the offender presents to the community. That may sound in special deterrence; Israil at [24]."
21 As might be expected counsel for the applicant before the sentencing judge relied upon the first three factors set out in that part of the judgment.
22 With respect, her Honour seems to have misunderstood the submission being made. She treated reliance on that decision as a type of parity argument comparing the position of Ms Hemsley with that of the applicant, rather than as being a case relied upon simply as revealing a matter of sentencing principle. As a result her Honour rejected that decision as having any relevance because "the cases cannot be compared". She came to that conclusion taking into account factors such as that Ms Hemsley had not served a period in custody before being sentenced, that she had a "different personality disorder" to the applicant and that she had used her period in custody "most productively". None of those matters was relevant to an application of the matters set out in the quote above.
23 The most recent statement of the significance of an offender's mental disorder is to be found in DPP (Cth) v De La Rosa [2010] NSWCCA 194 where McClellan CJ at CL stated:
177 Where an offender is suffering from a mental illness, intellectual handicap or other mental problems the courts have developed principles to be applied when sentencing: see, eg, R v Engert (1995) 84 A Crim R 67; R v Tsiarias [1996] 1 VR 398 at 400; R v Fahda [1999] NSWCCA 267 at [40] - [48]; Lauritsen v R [2000] WASCA 203; (2000) 114 A Crim R 333 at [43] - [51]; R v Harb [2001] NSWCCA 249 at [35] - [45]; R v Israil [2002] NSWCCA 255; R v Hemsley [2004] NSWCCA 228 at [33] - [36]; R v Verdins [2007] VSCA 102 at [32]; Courtney v R [2007] NSWCCA 195 at [14]-[18]; and R v Henry [2007] NSWCCA 90 at [28]. They can be summarised in the following manner:
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: R v Henry at [254]; Miller v R [1999] WASCA 66 at [23]; R v Jiminez [1999] WASCA 7 at [23], [25]; Tsiaras at 400; Lauritsen at [51]; Israil at [23]; R v Pearson [2004] NSWCCA 129 at [43]; Henry at [28].
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: Engert at 71; R v Wright (1997) 93 A Crim R 48 at 50 - 51; Israil at [22]; Pearson at [42]; Henry at [28].
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: Tsiaris at 400; Jiminez at [25]; Israil at [26]; Henry at [28].
It may reduce or eliminate the significance of specific deterrence: Courtney at [14]; Tsiaras at 400; Israil at [25]; JW at [192].
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: Israil at [24]; Henry at [28]. 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: R v Lawrence (2005) NSWCCA 91 per Spigelman CJ at [23] - [24].
178 I should stress that the mental health problems of an offender need not amount to a serious psychiatric illness before they will be relevant to the sentencing process. The circumstances may indicate that when an offender has a mental disorder of modest severity it may nevertheless be appropriate to moderate the need for general or specific deterrence: R v Skura [2004] VSCA 53; R v Verdins [2007] VSCA 102; (2007) 16 VR 269 at [5]."
24 None of these considerations was addressed by her Honour. This was chiefly because her Honour saw the applicant's mental disorders, whatever they be, as relevant only to the existence or otherwise of the mitigating factor under s 21A(3)(j) of the Crime (Sentencing Procedure) Act 1999: that "the offender was not fully aware of the consequences of his or her actions because of the offender's age or any disability". Clearly this factor did not apply, but the relevance of an offender's mental disorder transcends a matter of mitigation under this provision.
25 But with respect the passage from the sentencing remarks quoted above, fails, in our opinion, to give due weight to the uncontested psychiatric opinions in evidence before her Honour. True it is that the applicant was not diagnosed with a mental illness or a psychiatric disorder as her Honour recognised, but that was only so far as those terms are relevant to the provisions of the Mental Health Act. We do not believe that either Professor Greenburg or Dr Ellis would agree that the applicant was not suffering from at least one mental disorder. Although the applicant may have been endeavouring to manipulate the psychiatrists, he failed in that attempt. There is no suggestion that the opinions of either psychiatrist were reached as a result of any false reporting made by the applicant. Nor do we understand her Honour's finding that the applicant's condition "appears to be capable of treatment or improvement". This is inconsistent with the reports of both psychiatrists.
26 Further, contrary to her Honour's statement that there was no support for a contention that the applicant psychiatric state was relevant to the causation of the offence, we have set out above a passage from the report of Dr Ellis in which he gives the opinion that the applicant's mental condition may have resulted in his having less capacity than a normal person to reflect on his decisions. There is, in our opinion, some evidence of that in the applicant's apparent reasoning that he would be in a better position with the Department if he burned down the house in which he was living.
27 In our opinion her Honour failed to take into account in an appropriate manner the psychiatric evidence. Minds might differ as to the severity of the applicant's mental disorders, but it seems to us they were relevant both to an assessment of the applicant's culpability for his actions and the degree to which the sentence should reflect general deterrence. This ground of appeal is made out.