German linguist Heinz Kloss considered Modern Scots a ("half language") in terms of an abstand and ausbau languages framework, although today in Scotland most people's speech is somewhere on a continuum ranging from traditional broad Scots to Scottish Standard English. Many speakers are diglossic and may be able to code-switch along the continuum depending on the situation. Where on this continuum English-influenced Scots becomes Scots-influenced English is difficult to determine. Because standard English now generally has the role of a "Dachsprache", disputes often arise as to whether the varieties of Scots are dialects of Scottish English or constitute a separate language in their own right.