I also considered the multipaper dissertation format as well as the "PhD by publication". There has been some published discussion on the issue, but not much. I examined some dissertations using the multipaper format and found that many lacked overall coherence, a sustained in-depth argument, and a sufficient degree of originality (particularly when the included papers are jointly authored). Still, as one person said other than a will a dissertation is the only document genre that one will only ever use only once, so what is the point in mastering the genre? Not to mention that the number of people who will ever read one's dissertation is tiny, compared to journal articles, which are also invaluable for graduating students to have on their CVs. I wrote a paper on this and shortened it for my blog, which cover these concerns in more detail: http://glenfarrelly.blogspot.com/search/label/dissertation I agree with other poster that noted that it ultimately comes down to one's field and support from their advisors. Glen Farrelly PhD Student, Faculty of Information University of Toronto