***** To join INSNA, visit http://www.insna.org ***** I'd also be suspect about the estimates of # of total cards sent by measuring the number of cards sold by Hallmark et al. More often than not I get letters and photos from people or self-made cards but not preprinted stuff from the rack. (and sorry to all my friends this year who did not get holiday cards!) thanks Ed On 1/3/06, Blyden B. Potts <[log in to unmask]> wrote: > ***** To join INSNA, visit http://www.insna.org ***** > > Interesting, but IMO assuming that people made a concerted effort to send > Christmas cards to their full network of contacts would not be a strong > assumption to make for most Americans. I would imagine that an estimate > based on holiday cards would be only a fraction of the "full network". But > perhaps Christmas cards are a much stronger cultural practice among the > British? > > Blyden > > > Valdis wrote: > Here is the on-line PDF... > > http://www.liv.ac.uk/evolpsyc/Hill_Dunbar_networks.pdf > > > On Jan 2, 2006, at 10:37 AM, Lynn Smith-Lovin wrote: > > > Hill, R.A. and R.I.M. Dunbar. 2003. "Social network size in > > humans." Human Nature 14:53-72. > > _____________________________________________________________________ > SOCNET is a service of INSNA, the professional association for social > network researchers (http://www.insna.org). To unsubscribe, send > an email message to [log in to unmask] containing the line > UNSUBSCRIBE SOCNET in the body of the message. > -- Edward Vielmetti in Ann Arbor, MI 48104 +1 734 276 5910 [log in to unmask] http://www.vacuumgroup.com _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.