#  Visiting Fellows 

 



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  [### Isaac Dalke

 ](/people/isaac-dalke)Fellow in Sociology

 

 

 Isaac is a joint postdoctoral fellow at the Northeastern University Network Science Institute and the Harvard Institute for Policing, Incarceration, and Public Safety. His research investigates the development of community-based violence prevention... 

 

 

      ![Isaac Dalke](/sites/g/files/omnuum1481/files/styles/hwp_4_5__690x865/public/2025-07/Dalke%20Isaac%20photo.jpg?itok=kLE6gvN0) 

 

 

 

   [### Amelia O'Halloran

 ](/people/amelia-ohalloran) <ameliaohalloran@fas.harvard.edu>Fellow in Sociology

 

 

 Amelia O’Halloran is a Sociology research fellow with Harvard University’s Project on Human Development in Chicago Neighborhoods. Amelia completed her MPhil in Digital Humanities at the University of Cambridge, where she focused on the effects of public... 

 

 

      ![Amelia O Photo](/sites/g/files/omnuum1481/files/styles/hwp_4_5__690x865/public/sociology/files/amelia_o.jpg?itok=j-sezVvE)