I am studying Human Computer Interaction (HCI) and there is a lot of discussion about consistency across a website, predictability between pages, of theme and layout. There is information about color, input methods etc.
What I am interested in is visual clutter, how busy pages are and the target audience. By busy I mean, density of information, whether the information is in the form of links, headings, images, animations, and by density, the amount of information per web page compared to white space.
Is there study on the relationship between optimising visual clutter, and how this varies between target audiences?
I could guess that this would also be related in some ways to this question What is the maximum number of objects an average human being can recognize at once?.
This doesn't need to be strictly about web pages.