MCA v The State of Western Australia

The case of MCA versus the State of Western Australia involved a criminal appeal against conviction, with the appellant being convicted after a trial on five counts of sexual penetration of a child under the age of 13 years and four counts of indecent dealing with a child under the age of 13 years. The appellant was convicted on the evidence of two complainants. The central legal issues the court had to address were whether the evidence of the change in behaviour of one complainant at a time proximate to the offending was admissible, and if the trial judge erred in admitting this evidence and in directing the jury regarding the change in behaviour evidence.

The court examined whether the trial judge had erred in exercising his discretion to admit the change in behaviour evidence, and if the direction given to the jury regarding this evidence was appropriate. The court considered the relevance and probative value of the evidence against the potential for unfair prejudice. It also assessed whether the trial judge's direction to the jury adequately cautioned them about the limitations and potential risks of drawing conclusions based on the change in behaviour evidence. The court concluded that the trial judge did not err in admitting the evidence, and that his direction to the jury was appropriate.

In summary, the court found that the trial judge did not err in admitting the change in behaviour evidence or in directing the jury regarding it. The appeal was dismissed, and the conviction was upheld.