***** To join INSNA, visit http://www.insna.org ***** Corey: See: Valente, T. W. (1995). Network Models of the Diffusion of Innovations. Cresskill, NJ: Hampton Press. Valente, T. W. (2005). Models and methods for innovation diffusion. In P. J. Carrington, J. Scott, & S. Wasserman (Eds.) Models and Methods in Social Network Analysis. Cambridge, UK: Cambridge University Press. I don't think you'll find data that completely enables you to test what you want to test, though I'd be glad to be shown wrong. The datasets analyzed in the publications above rely on network data collected at the end of the process and in 2 of the 3 datasets at the same time the adoption data were collected. There is a relative scarcity on data concerning behavioral adoption and social networks longitudinally. Another way to frame your question is to ask whether individuals are influenced by their peers differentially over time, what I would phrase as time-varying thresholds which is certainly plausible. -Tom Corey Phelps wrote: >***** To join INSNA, visit http://www.insna.org ***** > >I am looking for research that the investigates the influence of network >structure as a medium of (e.g., information) diffusion and the effect of >structure on some outcome variable. In particular, I am looking for >longitudinal research that shows that the diffusion effect decays over time >(i.e., the further away in time the dependent variable is measured from the >variable(s) that capture network structure, the smaller the effect size). >Thanks in advance. > >Corey > >Corey Phelps >Asst. Professor, Management & Organization >University of Washington >Box 353200 >Seattle, WA 98195 >(206)543-6579 >[log in to unmask] > > > > >_____________________________________________________________________ >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. > > > -- To learn more about my evaluation book go to: http://www.oup-usa.org/isbn/0195141768.html My personal webpage: http://www-hsc.usc.edu/~tvalente/ --- Thomas W. Valente, PhD Director, Master of Public Health Program http://www.usc.edu/medicine/mph/ Department of Preventive Medicine School of Medicine University of Southern California 1000 S. Fremont Ave. Building A Room 5133 Alhambra CA 91803 phone: (626) 457-6678 fax: (626) 457-6699 email: [log in to unmask] _____________________________________________________________________ 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.