According to a study reported by CBC, more than one third of Alberta boys aged 13 to 14 have watched pornography on the internet "too many times to count." This percentage can be loosely compared to the study just published in Pediatrics on US youth which found that about a third of 16-17 year old boys had "wanted exposure" to online porn.
Both the US and Canadian studies found that exposure in girls in the same age categories was 8%. So, similar percentages, just younger age groups.
One possible explanation is that far fewer Canadian youth reported having filtering software on their computers as compared to US youth. In the Canadian study, only 13 per cent of the 8th grade students said they had blocking technology on computers and TVs, whereas over half of the US youth said their computers did.
The authors of both studies cite the need for parent and youth education to stop this behavior.