Could Helen Keller Read Your Page?
http://www.pantos.org/atw/35412.html

Sullivan, Terry and Krystyn Manning
All Things Web
1997

Abstract:

The 'line-at-a-time' approach of screen-reader software complicates navigation on text lines that contain multiple hyperlinks (such as navigation bars). Thus, in an ideal world, accommodating visually impaired readers would move an author to place each link on its own separate line. But individual lines for each link can make for long scrolling pages, which, in turn, compromises navigation speed for sighted readers.