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New board of directors for CWTS appointed


November 30th, 2023

CWTS will get a new board of directors for the coming three years, starting on 1 January 2024. The Faculty of Social and Behavioural Sciences of Leiden University has appointed Ludo Waltman as scientific director and Tjitske Holtrop, Wolfgang Kaltenbrunner and Clara Calero Medina as deputy directors. They will be supported by Ilse Schuitema as board secretary and institute manager for human resources and Mark Neijssel as institute manager for finances.

In the new board, Tjitske Holtrop will be deputy director for Culture & Inclusion:

"The portfolio Culture & Inclusion focuses on some of the crucial themes that (Dutch) academia is currently reckoning with, such as recognition and reward, open science, and Diversity, Equity, and Inclusion. I am thrilled to help further develop the vision of CWTS on Culture & Inclusion and put it into practice in conversation with Dutch national initiatives, with other impactful local initiatives, and, most importantly, with our own collective of great colleagues."

Wolfgang Kaltenbrunner will be deputy director for the portfolio Education & Research:

"In my view public research systems struggle with significant inefficiencies and exclusionary effects due to a hypercompetitive research funding and career structure, and this ultimately undermines our collective ability to tackle the existential challenges of the 21st century. In the next few years, I will do my best to support my talented colleagues in providing cutting edge teaching, analysis, and advocacy in a rapidly evolving debate on questions of research culture."

Clara Calero Medina will be deputy director for Innovation & Impact at CWTS:

"The portfolio Innovation & Impact represents the heart of the daily work of our centre, going from all types of projects to postgraduate courses and innovations from the focal areas. With this new CWTS Board, we cover a broad range of knowledge and expertise, to unite the interests of the centre with those of each of our colleagues, while strengthening the links with strategic collaborators. I look forward to working with this fantastic new Board."

Ludo Waltman will be the new scientific director of CWTS:

"I am extremely proud of our new team of directors, and I feel privileged to have the opportunity to help realize the many wonderful plans of our centre."


CWTS is very pleased about the appointment of these four excellent colleagues. Sarah de Rijcke, scientific director of CWTS: "The new board reflects the multi-faceted institute that CWTS has become. I am confident that the team will build on past achievements and successfully guide the way into the future, including the new Knowledge Agenda of CWTS. I wish them lots of success in their new roles!"

CWTS would like to thank the (still current) directors Sarah de Rijcke, Ed Noijons and Ludo Waltman for their invaluable and tireless work over the last years and for all that they have accomplished for the institute. Thank you very much!

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