Where a child complainant's evidence in a sexual offence case is clear, consistent, corroborated by other witnesses and medical evidence, and the identification occurred in good lighting conditions with the complainant in close proximity to the perpetrator over an extended period, there is no basis to find that the complainant could be mistaken about the identity of the assailant. In sentencing youthful offenders for serious sexual offences, where the offender's conduct demonstrates determination, disregard for resistance, and behaviour consistent with a sexually mature adult, the offender may appropriately be treated as an adult for sentencing purposes despite being only 18 years of age.