Challenging Current Practice
http://www.humanfactors.com/downloads/mar022.htm

Bailey, Robert
Human Factors International
2001

Abstract:

Is it better to have more items on a page and requiring fewer pages to be accessed (wide breadth), or to have fewer items per page and require more pages to be accessed (more depth)? Based primarily on studies reported three years ago by Larson and Czerwinski (1998) and Zaphiris and Mtei (1998), designers have been encouraged to construct broad, shallow sites.