Like Cwrw666 said there is a problem of how people are defining socialism and to a lesser extent capitalism so heres my attempt to clarify. To start I would like to point out there are no totally fully 100% socialist or capitalist countries so defining is a country is socialist is a bit of a grey area.
With true socialism a key part is all means of production would be cooperatively owned by the state or workers which obviously does not apply to the Scandinavian countries.
This is where I was getting it wrong thinking people who want socialism want the above when really they want greater redistribution of wealth through social policies but keeping capitalism. Most countries in the world have a system with capitalism at its core and varying levels of social policies on top.
America though getting less so is very capitalist having low taxes and low government spending (and regulation) while Norway has huge taxation, high government spending and the government owns large amounts of all large companies based there, while the UK is somewhere in between. So if you want to call a country socialist you need to have some standard that doesn't exist on the amount of wealth redistribution and government control it needs to fit the term or go with if means of production are not cooperatively owned its not socialist.