I wonder how much this has to do with a nation's format of policing and especially interrogation. The legal protection for refusing to speak in the US is the F

I wonder how much this has to do with a nation's format of policing and especially interrogation. The legal protection for refusing to speak in the US is the Fifth Amendment, which of course predates most modern police tactics. But there are basically no calls to change that, and it has a lot of cultural support too - there's plenty of media where "I ain't sayin' nothin'" marks a tough or well-informed character instead of a guilty one. The other side of which is that US police have very few boundaries in interrogations other than giving a Miranda warning and avoid physical violence. A lot of police forces rely heavily on the Reid Technique, which presumes the suspect is guilty and has a long history of producing false confessions. They're also free to outright lie about both the state of evidence and how a confession will be handled. I don't know a great deal about Norwegian policing, but just hearing this I would predict that "brought in for questioning" doesn't have the same "try to drag a confession out of you" associations it does in the US.