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The differential impact of network connectedness and size on researchers’ 
productivity and influence
Tsahi Hayat, Dimitrina Dimitrova &Barry Wellman
Information, Communication, & Society, 23, 5 

We analyze the effect of different types of online and offline ties – 
acquaintanceship, advice, and co-authorship – on researchers’ productivity 
and influence. Unlike static studies of networked work, we look at how 
changes in these networks affected researchers’ performance and influence. 
Using the number of publications as an indicator of productivity and the 
number of citations as an indicator of influence, we investigate when 
researchers were more productive and influential. We study whether their 
networks were cohesive, if the researchers were central in their networks 
or linked to central players, and whether their work had more 
opportunities to be disseminated through diverse, non-redundant ties. 
Although the connectedness of their networks was positively associated 
with the researchers’ productivity, it was the non-redundant effective 
size of the networks that was positively associated with the researchers’ 

KEYWORDS: Networked work, research network, closure, effective size

   Barry Wellman

                     Kyle Lowry is My Spirit Animal
   Step by step, link by link, putting it together--Streisand/Sondheim
       The earth to be spannd, connected by network--Walt Whitman
             It's Always Something--Roseanne Roseannadanna

             A day like all days, filled with those events
          that alter and illuminate our times--You Are There!
   Director, NetLab Network      			            FRSC
         Founder, International Network for Social Network Analysis
   NETWORKED: The New Social Operating System  Lee Rainie & Barry Wellman    

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