About the Team

Tamás Kolosi, Ph.D.

Founding chairman

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Kolosi founded TÁRKI in 1985. Previously he worked for the Institute for Social Research (Hungary), where he led several major sociological study on social stratification, social structure, inequalities and value orientations. He formulated a multi-dimensional approach to the inequalities of state socialist system based on large scale empirical surveys. Kolosi developed a theory of late socialist social structure. In his view (state) redistributive and small scale private economy formed a dual system of stratification during the seventies and eighties in Hungary. This is the so-called "L-model" of reform socialist Hungarian society. Meanwhile Kolosi played key role in the introduction of mathematical statistical methods and tools in Hungarian social science. He continued the study of transforming social structure after 1989/1990. His research interest includes the problem of empirical measurement in social sciences, life styles, elite formations during post-communist transition.rnrnHe is also turned to be successful businessman in the book publishing industry during the nineties. He is the president and CEO of the Lira Inc. Between 1989-1990 Tamás Kolosi was advisor to the Prime Minister, Mr. Miklós Németh and between (1998-2002) Mr. Viktor Orbán.

Béla Janky, Ph.D.

Chairman, TÁRKI Foundation

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Janky started his carrier as a pollster at TÁRKI with an interest in questionnaire design effects, and studied the role of moral considerations in shaping welfare attitudes in his dissertation. In the meantime, he published a book and several articles about the situation of the Roma of Hungary. He was also interested in game theoretic modeling of solidarity networks. Later he focused on stigmatization of marginalized groups, by developing formal models and conducting framing experiments. In his recent project, he has investigated the effects of media framing of marginalized groups on stigmatization, and has also examined how political identity modifies social attitudes.rnWhen he was the director of Institute for Sociology of the Hungarian Academy of Sciences, Janky helped to establish the first institutional data archive in Hungary - before joining TÁRKI again in 2019. His task is to develop a strategy for sustainable service-provision, supervise daily business, and represent TÁRKI at CESSDA General Assembly and directors' meetings.rnHe currently teaches at the Department of Sociology and Communication of the Budapest University of Technology and Economics (BME), and conducts research at the Centre for Social Sciences (related to the Hungarian Academy of Sciences), Budapest.rnHis current passion is to learn and disseminate ideas about open science.

Peter Hegedűs

Head of services


Peter Hegedűs is a sociologist who joined TÁRKI in 2006. He is the coordinator of the daily business and technical development of the Archive. He is responsible for the archiving and retrieving processes, and keeping in touch with the partners of the Archive. In recent years, Hegedűs has worked on the 'Strengthening and widening the European Infrastructure for Social Science Data Archives' (CESSDA-SaW) project, in which he has analyzed the situation of the European social science databases and strengthen the cooperation between them. He also helps young researchers and PhD students arriving to TÁRKI from all over Europe within the 'Integrating Research Infrastructure for European expertise on Inclusive Growth from data to policy' (InGRID-2) project. He also takes part in the Hungarian development of the tax-benefit microsimulation model for the European Union. His research areas are: second-level analysis of databases, poverty and social inequality.

Éva Schlemmer

Head of office


Éva Schlemmer is a sociologist who has completed her Ph.D. dissertation on the short- and long-term effects of local deliberative polling projects - an innovative technique of participatory democracy. Her main research interest has been on the impact of rational discourse on opinion formation. She has worked on the ‘Migrants and the Hungarian Society: Dignity, Fairness, Civic Integration’ project, in which she has analyzed focus groups on civic participation on the fairness and sense of justice. In another project that adopted participatory and deliberative methods she also conducted citizens juries on education and unemployment. Moreover, she has organised large-scale fieldworks in several social science research projects in recent years, before joining TÁRKI as an office manager in April 2018. She is responsible for the smooth operation of our office and she also takes care of the administration and project management tasks of the Survey Department.

András Gábos

Senior research fellow


András Gábos is Senior Resear fellow at TÁRKI (January 2000-present). His main research interests are in poverty, child poverty and well-being, income inequality, fertility effects of intergenerational transfers, cost of children, work incentive effects of family policies. He is a regular contributor to the TÁRKI Social Report publication series and is responsible for a large part of the analysis of the household surveys regularly conducted by TÁRKI. In addition, he has participated in several European research projects (e.g. Growing Inequalities Impacts - GINI, Poverty Reduction in Europe: Social Policy and Innovation – ImPRovE, Integrating Expertise in Inclusive Growth – InGRID, Strategic Transitions for Youth Labour in Europe – STYLE, Supporting expertise in inclusive growth – InGRID2), including also the Social Situation Observatory (DG EMPL, 2005-). He coordinated the Study of Child Poverty (DG EMPL, 2009) project and prepared a report entitled Child well-being in the European Union - Better monitoring instruments for better policies for the Hungarian government. Also, together with István György Tóth, he edited a proposal for the monitoring system of the Hungarian National Social Inclusion Strategy.In recent years he has coordinated the development of IPOLIS, an innovative interactive data visualization tool that makes it possible for non-academics to get easy access to- and investigate social indicators on marginalized groups.  

Kata Jávor

Project coordinator (TÁRKI Group)

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Kata Jávor has been working at Tárki since 2019. She is responsible for grant writing, research support, event organization and communication with international partners and funding organizations.

Orsolya Szabó

Project coordinator (TÁRKI Group)


Orsolya Szabó has degrees in religious studies (Univ. Amsterdam) and human right studies (Central European Univ.). She was project manager at different NGOs before joining TÁRKI in 2016. At TÁRKI, she is responsible for grant writing, research support, event organization and communication with domestic and international partners, clients and funding organizations. Currently she is on maternity leave.

Boglárka Herke

Intern (2019-20)


Boglárka Herke has been working on her Ph.D. dissertation about determinants of public attitudes towards single mothers in recent years. She joined the Archive for this academic year to carry out research on open science initiatives in Europe and beyond.

Éva Németh



Eva Nemeth has been the chief fiancial officer of TÁRKI Group since the early ninetites.