Section 29 of the Criminal Code (WA) requires the prosecution to prove beyond reasonable doubt that a child aged 10-14 had capacity to know that the conduct was seriously wrong by the ordinary standards of reasonable adults, which is distinct from proving actual knowledge and distinct from proving the child knew the conduct was merely naughty, mischievous, or legally wrong. Evidence of the furtive nature of offending and the secluded location alone, without evidence of the child's education, social circumstances, and intellectual and moral development, is insufficient to establish the requisite capacity.
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