Hi Mike, May I recommend my book on the subject, which I prepared basically to answer that question? "Measuring Quality of Life in Health", Rod O'Connor, Elsevier/ Churchill Livingstone 2004. I think you can order the book via Amazon.co.uk Kind regards, Rod _______________________________________ A/Prof. Rod O'Connor BSc(Hons) PhD CHEc Director Rod O'Connor & Associates P/L *'Better decisions'* Consultants in Decision Making and Health Care Improvement Also Conjoint Associate Professor, School of Public Health & Community Medicine, University of New South Wales Sydney Australia ph. +61-2 9555 9916 mob. 0413 60 70 73 Email: [log in to unmask] <mailto:[log in to unmask]> Web: www.RodOConnorAssoc.com <http://www.RodOConnorAssoc.com> *//*/"We carve out order by leaving the disorderly parts out" William Jame/s ________________________________________ Michael Bennett said the following on 6/03/2012 5:48 PM: > Hi all, > Can anyone recommend a good guide to ground oneself in how to best > validate a questionnaire? I have just been asked this question and I > know only two things: > 1. I don't know the answer, and > 2. It will be a lot more complicated than I think > Many thanks in anticipation, > Mike Bennett