***** To join INSNA, visit http://www.insna.org ***** Naja There are several ways to consider this question so what I write might not be completely accurate. You can specify in KPP the number of key players you want identified. You can decide the number you think is appropriate. Generally, the diffusion literature has recommended that opinion leaders be in the 10-15% range, so a network of 40 should have 4-6 leaders. In most of the school-based work I've done, we generally try to create groups 5-8 people with a leader from each group, yielding a slighly higher rate. If you start by assuming that a key player is required to be directly connected then the analysis of key players will necessarily depend on the network structure and the rate of key player identification will vary with network structure, sparser networks requiring more leaders, for example. I would not advocate following this logic, however, since it creates challenges of implementation and replication. (For example, having some networks in which leaders are assigned to 1 or 2 people.) So, in short, I would answer the question by proposing to have key players be 10-15% of the network. -Tom Naja McKenzie wrote: >***** To join INSNA, visit http://www.insna.org ***** > >I am completing a grant application in which I diffuse an intervention through key players in an adolescent friendship network. My external reviewer, who has some, but not a great deal, of SNA experience, asked if I could estimate the ratio of key players to the size of the network. I was not able to answer that, and my hunch is one can't, because it is so dependent on the network characteristics. However, I thought I would ask the members of SocNet for any input. > >Thanks in advance! > > >Naja E. McKenzie PhD, RN > >Research Associate - Postdoctoral Fellow > >Cancer Prevention and Control > >Arizona Cancer Center > >(520) 626-5363 > > >________________________________ >I am using the Free version of SPAMfighter<http://www.spamfighter.com/len> >We are a community of 5.9 million users fighting spam. >SPAMfighter has removed 432 of my spam emails to date. >The Professional version does not have this message > >________________________________ >DISCLAIMER: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. > >_____________________________________________________________________ >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. > > > > -- Thomas W. Valente, PhD Director, Master of Public Health Program http://www.usc.edu/medicine/mph/ Department of Preventive Medicine Keck School of Medicine University of Southern California 1000 S. Fremont Ave., Unit #8 Building A Room 5110 Alhambra CA 91803 phone: (626) 457-4139 cell: (626) 429-4123 fax: (626) 457-6699 email: [log in to unmask] My personal webpage: http://www-hsc.usc.edu/~tvalente/ The Empirical Networks Project http://ipr1.hsc.usc.edu/networks/ Evaluating Health Promotion Programs (Oxford U. Press): www.oup-usa.org/isbn/0195141768.html _____________________________________________________________________ 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.