Probative value
32 Not expressly to be found in the Evidence Act is an answer to an underlying question of interpretation: does the assessment of "probative value" incorporate or permit an assessment on the part of the judge of the credibility or reliability of the evidence? Or is the judge to proceed on the basis that the evidence will be accepted by the tribunal of fact and evaluate its probative value in the light of the other evidence, already given, or to be given? If the latter is the case then evidence identifying the respondent as the intruder was of very substantial probative value. It was evidence essential to the Crown case. But Solomon DCJ approached the question on the basis that the former is the case: that is, that in evaluating the probative value of the evidence, he was entitled and even required to assess its credibility or reliability. That is why he added the reference to s 165 of the Evidence Act. In doing so, he found significant flaws in the evidence, diminishing, in his view, the weight that could properly be attached to it.
33 Although some contrary views have been expressed (see, for example Papakosmas v The Queen [1999] HCA 37; 196 CLR 297, per McHugh J; R v Rahme [2004] NSWCCA 233, per Hulme J (dissenting), the prevailing wisdom is that it is not open to a trial judge, in assessing, for the purposes of s 137, the probative value of any piece of evidence, to take into account his/her evaluation of its reliability or of the credibility of the witness through whom it is tendered: R v Shamouil [2006] NSWCCA 112; 66 NSWLR 228 at [47]-[65], per Spigelman CJ; and see Adam v The Queen [2001] HCA 57; 207 CLR 96, per Gaudron J. That is, "probative value" is not to be determined by the weight that might be given to any piece of evidence. What is to be considered is the role that that piece of evidence, if accepted, would play in the resolution of a (disputed) fact - or the contribution it might, if accepted, make to that resolution. Apart from anything else, to make the assessment of probative value on the basis of the perceived credibility or reliability of the witness through whom it is given, or perceived weakness in the evidence, would be to attempt to anticipate the weight the jury would attach to it, a task to be undertaken by the jury when all the evidence is complete.
34 Logically, the first step in the evaluation of the probative value of any item of evidence is the identification of the "fact in issue" the probability of the existence of which could be affected by the evidence in question; here that "fact in issue" is the identity of the person who intruded into the home unit: that is, whether the respondent was that person. In the case of each witness, the evidence was positive identification of the respondent as that person and therefore, on its face, affected to a very considerable extent the probability that the respondent was the intruder - therefore, it had probative value to a high degree.
35 The argument put to Solomon DCJ, and accepted by him, was that that probative value was diminished by the three circumstances outlined above, that is: the inherent unreliability of photographic identification; asserted inadequacies in the matching of the images to the description of the intruder given by Ms Vollmer (I infer that what underlay this argument was the suggestion that, since the 62 images other than that of the respondent did not accord with that description, Ms Vollmer was, consciously or unconsciously, drawn to select the image of the respondent as that of the intruder, whereas, if others had more closely resembled that description, the task of selection would have been more difficult, but the ultimate selection, if made, more reliable); and asserted weaknesses inherent in cross-racial identification.
36 For these reasons, in combination, Solomon DCJ concluded that the evidence did "not have strong probative value". In doing so, he took into account the implied statutory recognition of potential weaknesses in identification evidence spelled out in s 165 of the Evidence Act.
37 In my opinion, in taking this approach to the assessment of the probative value of the evidence his Honour fell into the error referred to in Shamouil. He took into account the reliability of the evidence, and the credibility or reliability of the witnesses through whom, it was proposed, the evidence would be given. As was pointed out in Shamouil ([64]-[65]) this trespassed upon the function of the jury.
38 Considerations of unreliability of photographic identification, for the reasons set out in Alexander; of the weight to be attributed to the evidence by reason of similarities to or discrepancies between the various individuals portrayed and the description given by Ms Vollmer, and any frailties of interracial identification, are matters for the jury to weigh up and assess in the light of directions given to them. The s 165 consideration was, in my opinion, irrelevant. Section 165 is not material in determining, for the purposes of s 137, the probative value of evidence; s 165 is a provision which provides for protection of an accused person by requiring certain explicit instructions to be given to a jury where evidence may be unreliable.
39 In my opinion, error has been demonstrated in the approach taken to the assessment of "probative value". As I have indicated above, the evidence was essential to the Crown case, and therefore (assuming it was accepted by the jury) had a very high level of probative value.
40 The next question is whether that probative value was outweighed by the danger of unfair prejudice.
41 The argument ignored another, very important part of the evidence. Having indicated that the men portrayed on the CD were "local offenders" Constable Winter then went on to explain that Ms Vollmer should not assume that all the men depicted had criminal records. This ameliorated or nullified the unfortunate reference to "local offenders". Constable Winter made it clear that the intruder was not to be assumed to be among the array.
42 It is true that the Crown offered to excise those words from the transcript and from the sound recording, and, if this were done, the avenue of cross-examination counsel wished to pursue would have evaporated; but it was not necessary that the Crown offer be accepted. If the words were left in, the cross-examiner could have explored the issue, and directions could adequately have been given to bring home to the jury that they, like Ms Vollmer, should not make any assumptions about the respondent's criminal history.
43 There may have been some prejudice to the respondent in the words if put before the jury; if so it was, in my opinion, minimal and, given the high probative value of the evidence, it was certainly not such as to outweigh that probative value.
44 Although it is not open to a court performing the balancing exercise set by s 137 to take into account, on the assessment of probative value questions of the weight of the evidence, that is not so when assessing the issue of asserted "unfair prejudice". On the voir dire, Ms Vollmer was cross-examined about the possible effect on her of words "local offenders"; and Ms Lanz was cross-examined about the possible effect on her of knowing that Ms Vollmer had made an identification. Both vigorously denied any such effect. The cross-examination had little, if any, impact.
45 One might expect similar responses in a trial. That leads to the conclusion that the respondent was deprived of little, if anything, of value, if the words were excised and he was then unable to cross-examine as indicated.
46 Whether the words were excised or not was, in the end, a matter for the respondent's counsel. Either way, there was no unfair prejudice.
47 A further consideration is this: the offending words used by Constable Winter applied equally to all the images shown to Ms Vollmer. It is one thing to suggest that they may have influenced her to make a suggestion; it does not explain why she selected the image of the respondent.
48 In Cook I concluded ([38]) that, where a balancing exercise under s 137 has been shown to have been made on an erroneous basis, the judgment can be undertaken afresh by an appellate court. In my opinion that ought to be done in this case.
49 The probative value of the evidence of each witness, leaving aside considerations of reliability or credibility, upon which I make no comment, is very high indeed. With respect to the evidence of Ms Vollmer, the danger of unfair prejudice is very low indeed.
50 In my opinion the appeal against the ruling concerning Ms Vollmer's evidence ought to be allowed, and the judgment of Solomon DCJ of 15 November 2007 be set aside.
51 That has this effect. The unfair prejudice said to arise in respect of Ms Lanz's evidence is removed. There would be no reason why Ms Lanz could not be cross-examined with a view to showing that she was influenced with making a selection by her knowledge that Ms Vollmer had done so. Again, that leaves unexplained the circumstance that Ms Lanz selected the image of the respondent.
52 In my opinion, the appeal against the ruling concerning Ms Lanz's evidence ought also to be allowed, and the judgment of Solomon DCJ of 19 November 2007 be set aside.
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