I think there is a difference between the Scots and English mentality, and it arises from our histories, For me, Scotland is far less hierarchical than England. For example, in Medieval times, land was granted by the King to the Dukes, and by them to minor landowners, there were vassals, serfs etc. In Scotland, there was the Clan system, the land was collectively owned and defended. (Even today the concept of freehold and leasehold does not exist.) In religion, the Church of England has bishops, archbishops, vicars, deacons, sextons etc. and is headed by the Archbishop of Canterbury. The Church of Scotland has ministers, supported by Elders from their congregations, and head by the Moderator of the Assembly of the Church of Scotland, an elected post held for four years only.
IMO, this heritage of a flatter hierarchy is the basis for the more socialist cast to Scotland. As maybenow suggested, we do not see the state as separate from us, we see ourselves as collectively being the state.
Similarly, I think it may underpin out perceived 'chippyness'. In a flatter hierarchy, there is far less deference, because everyone is at the same level; so when someone tries to lord it over you (note: no Lords historically in Scotland, just clan Chiefs who had obligations to clan members as well as power) it is unjustified, and the person is deserving of being put in their place.