How does the visual design of news mediums effect the presentation of information?

By deconstructing news layouts from visual mediums including television, newspapers, news magazines and the internet, is it possible to help consumers of the news separate more direct representations of information from editorial design treatments that are used to package the presentation of that information?

If it is possible, then perhaps such a process could help to clarify the cumulative effects of design on the presentation of news.

Hopefully, making this process accessible to users could become one method for helping to create a better informed, more critical viewing public.