Rhoads, James C. (2007). Q methodology. In Neil J. Salkind (Ed.) and Kristin Rasmussen (Managing Ed.), Encyclopedia of measurement and statistics (Vol. 3, pp. 799-802). Thousand Oaks, CA, London, and New Delhi: Sage Publications.
This 2000-word entry is at the beginning of Volume 3 of this Encyclopedia and is a clear and well-written summary of all the main features of Q methodology, including concourse, Q samples, P sets, Q sorting, factor analysis and rotation, and single-case studies. The entry includes two tables — examples of a scoring form and of a factor matrix — and allusions to several crisp examples. It concludes with eight references for further reading. James Rhoads <firstname.lastname@example.org>is at Westminster College (New Wilmington, PA, USA) and is a past president of the International Society for the Scientific Study of Subjectivity.