R v Dickson (No 13)

In the matter of R v Dickson (No 13), the defendant was convicted of multiple charges of child sexual abuse. The case was heard by the High Court of Australia. The primary dispute centred around the admissibility of expert evidence that the defendant sought to present in his defence. The expert evidence was intended to challenge the reliability of the child victims' testimonies.

The legal issues before the court involved whether the proposed expert evidence was admissible and, if so, what role it could play in the trial. Specifically, the court needed to determine whether the expert evidence was relevant and whether it could assist the jury in understanding the evidence presented. The court also had to consider whether the evidence was of a type that could be properly described as expert evidence or if it was more appropriately categorised as factual evidence.

The High Court found that the proposed expert evidence was not admissible as expert evidence. The court reasoned that the evidence was entirely factual and did not possess the specialised knowledge that is characteristic of expert evidence. It was concluded that the evidence did not assist the jury in understanding the evidence or determining a fact in issue. The court held that the evidence should have been admitted as factual evidence, but only if it was relevant and probative of a fact in issue. The decision underscored the importance of distinguishing between expert evidence and factual evidence in criminal trials.

As a result of the court's decision, the defendant's conviction was upheld. The court did not order a retrial, as the error in the admission of evidence did not affect the outcome of the trial.