Tessa Kaufman, PhD: Toward Tailored Interventions: Explaining, Assessing, and Preventing Persistent Victimization of Bullying

  • Supervisors: René Veenstra, Gijs Huitsing, Tina Kretschmer (RUG).
  • Funding: NWO VICI Program; Thesis defense: Groningen, February 27, 2020. 
  • Manuscript committee: Lucy Bowes (University of Oxford), Maja Dekovic (Utrecht University), and Siegwart Lindenberg (RUG).

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Marianne Hooijsma, PhD: Clashrooms: Interethnic Peer Relationships in Classrooms

  • Supervisors: René Veenstra, Jan Kornelis Dijkstra, Gijs Huitsing, and Andreas Flache (RUG).
  • Funding: PhD Fund Faculty BSS; Thesis defense: 2020.  
  • Manuscript committee: Miles Hewstone (University of Oxford, Finland), Maykel Verkuyten (Utrecht University), and Tom Snijders (RUG).
  • Currently employed as researcher at the Netherlands Youth Institute (NJi), Utrecht.

Ashwin Rambaran, PhD: The classroom as context for bullying: A social network approach

  • Funding: NWO (PROO); Thesis defense: September, 23, 2019.
  • Supervisors: René Veenstra, Jan Kornelis Dijkstra, and Marijtje van Duijn (RUG). 
  • Manuscript committee: Christina Salmivalli (University of Turku, Finland), Wilma Vollebergh (Utrecht University), and Tom Snijders (RUG).
  • Currently employed as Postdoc, Department of Developmental Psychology and Socialization, University of Padua (Padova), Italy.

Chaim la Roi, PhD: Stigma and Stress : Attitudes towards Sexual Minority Orientations and the Association between Sexual Orientation and Mental Health. 

  • Funding: NWO Graduate Program. Thesis defended: January 10, 2019.
  • Supervisors: René Veenstra, Jan Kornelis Dijkstra, and Tina Kretschmer (RUG). 
  • Manuscript committee: Stephen Russell (University of Texas at Austin, USA), Marcel Lubbers (Radboud University Nijmegen), and Melinda Mills (Oxford University). 
  • Currently employed as Postdoc, Institute for Future Studies, Stockholm University.

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Mariola Gremmen, PhD: Social Network Processes and Academic Functioning: The Role of Peers in Students’ School Well-Being, Academic Engagement, and Academic Achievement 

  • Funding: NWO (PROO). Thesis defended: Groningen, November 1, 2018.
  • Supervisors: René Veenstra, Jan Kornelis Dijkstra, and Christian Steglich (RUG). 
  • Manuscript committee: Robert Crosnoe (University of Texas at Austin, USA), Toon Cillessen (Radboud University Nijmegen), and Tom Snijders (RUG).
  • Currently employed as Researcher at Cinop, Den Bosch.

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Loes van Rijsewijk, PhD: Antecedents and Consequences of Helping among Adolescents 

  • Funding: NWO (Research Talent Grant). Thesis defended: October 18, 2018.
  • Supervisors: René Veenstra, Jan Kornelis Dijkstra, and Christian Steglich (RUG). 
  • Manuscript committee: Allison Ryan (University of Michigan, USA), Beate Volker (University of Amsterdam), and Siegwart Lindenberg (RUG).  
  • Currently employed as Researcher at Onderzoek Informatie en Statistiek Groningen.

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Beau Oldenburg, PhD: Bullying in Schools: The Role of Teachers and Classmates

  • Funding: Onderwijs Bewijs. Thesis defended: Groningen, January, 19, 2017.
  • Supervisors: René Veenstra and Marijtje van Duijn (RUG). 
  • Manuscript committee: Wendy Troop-Gordon (North Dakota State University, USA), Beate Volker (University of Amsterdam), and Roel Bosker (RUG). 
  • Currently employed as Postdoc, Department of Sociology, University of Groningen.

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Gerine Lodder, Postdoc 2015-2019

  • Currently employed as assistant professor at the Department of Psychology, Tilburg University.
  • PhD, Radboud University Nijmegen / University of Leuven (Belgium), 2016, Supervisors: Rutger Engels, Luc Goossens, Ron Scholte, and Maaike Verhagen. 
  • Winner of a VENI grant for her project titled The Proximity Project: Loneliness in Adolescence Explained by Social Relations and Social Appraisals.
  • Winner of the BSS Science for Society Award, January 2018  

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Rozemarijn van der Ploeg, PhD: Be a Buddy, Not a Bully? Four Studies on Emotional and Social Processes Related to Bullying, Defending, and Victimization

  • Funding: Onderwijs Bewijs. Thesis defended: Groningen, April 14, 2016. 
  • Supervisors: René Veenstra, Christian Steglich (RUG) and Christina Salmivalli (University of Turku). 
  • Manuscript committee: Anthony Volk (Brock University, Canada), Toon Cillessen (Radboud University Nijmegen) and Siegwart Lindenberg (RUG). 
  • Currently employed as Assistant Professor, Department of Sociology, University of Groningen.

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Kim Pattiselanno, PhD: At Your Own Risk: The Importance of Group Dynamics and Peer Processes in Adolescent Peer Groups for Adolescents’ Involvement in Risk Behaviors

  • Funding: NWO (Youth & Family). Thesis defended: Groningen, March 10, 2016.
  • Supervisors: Jan Kornelis Dijkstra, Christian Steglich, René Veenstra (RUG), and Wilma Vollebergh (UU). 
  • Manuscript committee: Wayne Osgood (Pennsylvania State University), Rutger Engels (Radboud University Nijmegen), Tom Snijders (RUG). 
  • Currently employed as Lecturer, Stenden University of Applied Sciences, Leeuwarden. 

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Britta Rüschoff, PhD: Peers in careers: Peer relationships at the transition from school to work 

  • Funding: ICS. Thesis defended: Groningen, June 4, 2015. 
  • Supervisors: Jan Kornelis Dijkstra, Siegwart Lindenberg, and René Veenstra (RUG). 
  • Manuscript committee: Jari-Erik Nurmi (University of Jyväskylä, Finland), Marcel Van Aken (Utrecht University), Andreas Flache (RUG). 
  • Currently employed as specialist at the Federal Institute for Vocational Education and Training, Bonn, Germany. 

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Tinka Veldhuis, PhD: Captivated by Fear: An Evaluation of Terrorism Detention Policy

  • Funding: ICS/Faculty. Thesis defended: Groningen, March 26, 2015. 
  • Supervisors: Siegwart Lindenberg, Ernestine Gordijn, and René Veenstra (RUG). 
  • Manuscript committee: Arie Kruglanski (University of Maryland, USA), Mark Hamm (Indiana State University, USA), and Rafael Wittek (RUG). 
  • Was Assistant Professor, Department of Criminology, Leiden University. Currently living in Wales and a research fellow at ICCT. 

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Gijs Huitsing, PhD: A Social Network Perspective on Bullying 

  • Funding: NWO Toptalent 021.002.022. Thesis defended: Groningen, December 4, 2014. 
  • Supervisors: Marijtje van Duijn, Tom Snijders, and René Veenstra (RUG). 
  • Manuscript committee: Clemens Kroneberg (University of Cologne / MZES Mannheim, Germany), Toon Cillessen (Radboud University Nijmegen), and Siegwart Lindenberg (RUG). 
  • Currently employed as Assistant Professor, Department of Sociology, University of Groningen. 
  • Winner of a VENI grant in 2017 for his project titled Network Interventions in the Peer Context.

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Marina Verlinden, PhD: Population-Based Studies of Bullying in Young Children 

Miia Sainio, PhD: Same- and Other-Sex Victimization: Risk Factors, Consequences, and Protection by Peers 

  • Funding: Academy of Finland. Thesis defended: Turku, Finland, September 20, 2013. 
  • Supervisors: Christina Salmivalli (University of Turku) and René Veenstra (RUG). 
  • Manuscript committee: Philip Rodkin (University of Illinois at Urbana-Champaign, USA) and Noel Card (University of Arizona, USA). 
  • Currently employed as researcher at the University of Turku, Finland.  

Anke Munniksma, PhD: Crossing Ethnic Boundaries: Resistance to and Consequences of Adolescents’ Cross-Ethnic Peer Relations

  • Funding: ICS. Thesis defended: Groningen, January 17, 2013
    Supervisors: Andreas Flache (RUG), René Veenstra (RUG), and Maykel Verkuyten (UU). 
  • Manuscript committee: Adam Rutland (Kent University, UK), Frank van Tubergen (UU), and Sabine Otten (RUG). 
  • Currently employed as Assistant Professor, Department of Educational Sciences, University of Amsterdam. 

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Katya Ivanova, PhD: From Parents to Partners: The Impact of Family on Romantic Relationships in Adolescence and Emerging Adulthood 

  • Funding: ICS. Thesis defended: Groningen, March 5, 2012
  • Supervisors: Melinda Mills and René Veenstra (RUG). 
  • Manuscript committee: Wendy Manning (Bowling Green State University, USA), Maja Dekovic (UU), and Siegwart Lindenberg (RUG). 
  • Currently employed as Assistant Professor, Department of Sociology, Tilburg University.

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Tobias Stark, PhD: Integration in School Classes: Students’ Interpersonal Attitudes and Interpersonal Relationships 

  • Funding: ISW. Thesis defended: Groningen, September 8, 2011 (cum laude).
  • Supervisors: Andreas Flache, Roel Bosker, and René Veenstra (RUG). 
  • Manuscript committee: Daniel McFarland (Stanford University, USA), Maykel Verkuyten (UU), and Sabine Otten (RUG). Cum laude committee: Ken Frank (Michigan State University, USA) and Frank Kalter (Universität Mannheim, Germany). 
  • Currently employed as Assistant Professor at the European Research Centre on Migration and Ethnic Relations, Utrecht University. 
  • Winner of a Marie Curie grant for his project titled Networks and Prejudice
  • Winner of a Research Prize of Praemium Erasmianum. Winner of the NSV Dissertation Prize for the best dissertation of 2011 and 2012. 
  • Winner of a VENI grant for his project titled Interethnic Attitudes and Social Influence within Social Networks: Towards an Intervention Program for Ethnically Segregated Schools

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Tina Kretschmer, Postdoc 2011-2015

  • PhD, University of Sussex (UK), 2010, Supervisor: Alison Pike. 
  • Currently employed as Associate Professor, Department of Pedagogy and Educational Sciences, University of Groningen.
  • Winner of a College for Life Sciences Fellowship at the Wissenschaftskolleg – Berlin Institute for Advanced Study 2015. Winner of a Teaching Excellence Fellowship at the University of Groningen 2015.
  • Winner of the ERC Starting Grant 2017 for her project titled Ghosts from the past: Consequences of Adolescent Peer Experiences across social contexts and generations.

Jelle Sijtsema, PhD: Adolescent Aggressive Behavior: Status and Stimulation Goals in Relation to the Peer Context 

  • Funding: ICS. Thesis defended: Groningen, October 7, 2010 (cum laude).
  • Supervisors: Siegwart Lindenberg and René Veenstra (RUG). 
  • Manuscript committee: Noel Card (University of Arizona, USA), Pol van Lier (Vrije Universiteit, Amsterdam), and Tom Snijders (Oxford University / RUG).  Cum laude committee: Michel Boivin (Universite Laval Quebec, Canada) and Bruce Ellis (University of Arizona, USA).
  • Currently employed as Assistant Professor, Department of Psychology, Tilburg University.
  • Winner of ISSBD Young Scientist award 2014.

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Miranda Sentse, PhD: Bridging Contexts: The Interplay between Family, Child, and Peers in Explaining Problem Behavior in Early Adolescence

  • Funding: NWO. Thesis defended: Groningen, March 4, 2010 (cum laude).
  • Supervisors: Siegwart Lindenberg and René Veenstra (RUG).
  • Manuscript committee: John E. Bates (Indiana University, USA), Marcel van Aken (UU), and Melinda Mills (RUG). Cum laude committee: Karen Bierman (Pennsylvania State University, USA) and Brett Laursen (Florida Atlantic University, USA).
  • Currently employed as Assistant Professor at the Department of Criminology, Leiden University.

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Jan Kornelis Dijkstra, PhD: Status and Affection among (Pre)adolescent Peers and their Relation with Antisocial and Prosocial Behavior

  • Funding: ICS. Thesis defended: Groningen, October 22, 2007. 
  • Supervisors: Siegwart Lindenberg and René Veenstra (RUG).
  • Manuscript committee: Ernest Hodges (St Johns University, USA), Terrie E. Moffitt (King’s College London, UK), Sijmen A. Reijneveld (RUG), and Rafael Wittek (RUG).
  • Currently employed as Associate Professor, Department of Sociology, University of Groningen.
  • Winner of a VENI grant for his project titled Belonging and Status in Peer Networks as Crucial Factors for Understanding Peer Influence Processes in the Realm of Adolescent Risk Behavior.

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