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 113 Prior to trial, Network Ten served purported expert evidence seeking to establish that aspects of Ms Higgins' behaviour were not demonstrative of untruthfulness by reference to common or usual patterns of behaviour (as was anticipated would be asserted by Mr Lehrmann in cross-examination). This evidence was not proposed to be adduced by Network Ten in support of a submission that it was probable Ms Higgins was telling the truth, nor that her behaviour following the alleged rape rendered it more or less likely that the assault had occurred as alleged. Rather, the opinion evidence was said to support the proposition that any counterintuitive behaviour relied upon by Mr Lehrmann was of neutral significance.

114 It was a type of evidence discussed by Associate Professor Jacqueline Horan and Professor Jane Goodman-Delahunty in their article 'Expert Evidence to Counteract Jury Misconceptions about Consent in Sexual Assault Cases: Failures and Lessons Learned' (2020) 43(2) UNSW Law Journal 707. In that article (dealing with how so-called "rape myths" play a role in jury decision-making), the authors observed (at 710–11):

115 Such opinions as to "counterintuitive evidence" have been admitted under s 108C(1) EA in criminal sexual assault trials in a number of cases, including: Hoyle v R [2018] ACTCA 42; (2018) 339 FLR 11 (at 46–48 [223]–[244] per Murrell CJ, Burns and North JJ); MA v R [2013] VSCA 20; (2013) 226 A Crim R 575 (at 586–587 [45]–[52] per Osborn JA; at 595 [95] per Redlich and Whelan JJA); R v Kirkham [2020] NSWDC 658 (at [41]–[42] per McLennan DCJ); Aziz (a pseudonym) v R [2022] NSWCCA 76; (2022) 297 A Crim R 345 (at 355–363 [49]–[92] per Simpson AJA, Lonergan J agreeing).

116 The evidence was objected to by Mr Lehrmann on a number of grounds, which are now unnecessary to detail. Prior to ruling on the objections, I raised with the parties my preliminary view that even if the evidence was admissible, it would be, at best, of marginal Lehrmann v Network Ten Pty Limited (Trial Judgment) [2024] FCA 369