I don't think it has as much to do with intelligence as it has to do with socio-economic factors. In Norway, there are very few who live pay-check to pay-check (about 3% compared to more than 50% in the US), also there is a strong safety net, so even if you're poor you have no reason to fear starvation. Compare that to poorer countries where stealing or joining criminal groups becomes one of the only ways for people without good education and prospects to survive and it's hardly a surprise why the difference is so big. After all, people need to live.

But perhaps most important about Norway compared also to countries like England, who have much worse statistics than ours, is the culture and public programs that want people to get back up and back into society if they fail. If people are judged as "criminals" and "bad guys", then one should not be surprised if they see themselves that way too and end up doing bad things... We're all capable of doing good, and we all benefit from helping others be the best versions of themselves that they can be.