***** To join INSNA, visit http://www.sfu.ca/~insna/ ***** Xav, IQV was invented by Karl Schuessler. Here's my 30+ year old reference: Mueller, John, Karl Schuessler and Herbert Costner. 1970. Statistical Reasoning in Sociology. 2nd ed. Boston: Houghton Mifflin. It's a stats textbook that Karl co-wrote. There may be other, more focused sources. I use IQV all the time for categorical diversity in Ego Nets (e.g., Kin/Friend/Neighbor/Coworker) and no one has ever criticized me, and I give the above book as the reference. Also, Schuessler's reasoning expressed in the textbook appears to me to be quite sensible. And Peter Marsden, whom you say also uses it, is usually a reliable source;-) For continuous variable diversity, I simply use standard deviation. Barry _____________________________________________________________________ Barry Wellman Professor of Sociology NetLab Director wellman at chass.utoronto.ca http://www.chass.utoronto.ca/~wellman Centre for Urban & Community Studies University of Toronto 455 Spadina Avenue Toronto Canada M5S 2G8 fax:+1-416-978-7162 To network is to live; to live is to network _____________________________________________________________________ On Mon, 19 Jan 2004, Xavier de Souza Briggs wrote: > Date: Mon, 19 Jan 2004 12:23:01 -0500 > From: Xavier de Souza Briggs <[log in to unmask]> > To: [log in to unmask] > Subject: Analyzing network diversity > > ***** To join INSNA, visit http://www.sfu.ca/~insna/ ***** > > Can anyone offer advice on when to use the index of qualitative variation > (IQV) versus other measures of diversity for ego-centric networks? > > Am trying to decide how best to account for group population sizes in > measuring racial/ethnic diversity of survey respondents' networks. IQV was > Marsden's (1987) choice in analyzing network diversity in the General > Social Survey data on "core discussion networks" of Americans. But the only > methodological citation I can find for IQV is now more than 25 years old > (Agresti and Agresti 1977), and while I'm happy to consult a classic, such > as it is, I'm also hoping for advice based on more recent analytic choices. > > Thanks -- Xav > > Xavier de Souza Briggs > Associate Professor of Public Policy > Harvard University, Kennedy School of Government > 79 JFK Street > Cambridge, MA 02138, U.S.A. > (voice) 617.496.2776 (fax) 495.0996 > > Martin Luther King, Jr. Visiting Fellow in Urban Studies and Planning, MIT > (2002-2004) > > _____________________________________________________________________ > SOCNET is a service of INSNA, the professional association for social > network researchers (http://www.sfu.ca/~insna/). To unsubscribe, send > an email message to [log in to unmask] containing the line > UNSUBSCRIBE SOCNET in the body of the message. > _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.sfu.ca/~insna/). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.