Personal profile
Curriculum
Roman Trötschel is Professor of Social and Political Psychology at the Faculty of Sustainability at Leuphana University Lüneburg. He leads the Negotiation Research Group (NRG), which studies decisions, strategies, mindsets, and group dynamics in societal, political, and economic negotiations. The group’s research is funded by national and international institutions such as the German Research Foundation (DFG), the European Union (ERDF), the Volkswagen Foundation, the Kellogg School of Management, and the Hans Böckler Foundation. Findings are published in leading international journals in psychology, sustainability science, and economics.
Psychological Perspectives on Negotiations
Psychological negotiation research empirically examines the “human factor” in bargaining—how negotiators’ mental processes, emotions, and behaviors shape the negotiation process and its outcomes. It explores when psychological processes facilitate the exploration of mutual acceptable and beneficial agreements and when they become obstacles. Roman Trötschel’s work focuses on mechanisms such as cognitive heuristics (e.g., anchoring, framing, mental accounting), motivational processes (e.g., self-regulation, goal setting), mindsets (e.g., perspective-taking, integrative mindsets), group dynamics (e.g., social identity, group processes), and psychological conflicts in scarce resource negotiations (e.g., public goods negotiations, commons negotiations).
The Negotiation Research Group (NRG) investigates psychological mechanisms in negotiations that drive economic, ecological, and societal transformation. Transformation negotiations aim to initiate, shape, and manage fundamental change in economic, environmental, societal, or cultural domains. Their goal is to promote sustainable development by:
- a) addressing multiple dimensions of outcomes (economic, ecological, and social),
- b) integrating diverse and multilateral interests of stakeholders both at and beyond the negotiation table, and
- c) balancing immediate, short-term, and long-term interests of stakeholders in the present and the future.
In essence, transformation negotiations seek sustainable agreements to intergroup ans well as intergenerational conflicts of interests arising in times of transition.
Psychological Perspectives on Transformation Negotiations
From a psychological perspective, negotiating transformation poses extraordinary challenges because it heightens cognitive demands and triggers conflicts at multiple levels—within individuals, between individuals, within groups, and between groups and different generations. Negotiators must balance benefits and burdens across different outcome dimensions, account for the interests of parties at the table as well as those absent from it, and reconcile immediate with future consequences. Only by considering these multidimensional negotiation outcomes—conflicts between present and future generations, across different groups at different locations, or across different types of outcomes such as economic, social, or ecological benefits and burdens —can genuinely sustainable agreements be achieved.
Adding to this complexity, transformation negotiations are typically marked by high levels of uncertainty and unpredictability. This given complexity makes it particularly difficult to reach long lasting conflict resolutions, as negotiators must design agreements for futures that remain uncertain and, at times, unknowable.
Current Research Projects
As transformation negotiations are affected by the complex interplay of various psychological factors that have not yet been systematically addressed in empirical negotiation research, different psychological mechanisms are investigated in separate research projects of the NRG. The following list of research fundings, Ph.D.- and habilitation projects (i.e., postdoctoral research projects) provides a brief overview of the ongoing research on transformation negotiations at the NRG.
- Mental accounting in negotiations with multiple-dimensional outcomes: Balancing benefits and burdens across different utility dimensions (PI: Roman Trötschel; Co-PIs: Marco Schauer, Kai Zhang); Funded by the German Research Foundation (DFG)
- Intrapersonal and Interpersonal Conflicts as a Barrier towards Sustainable Agreements (PI: Johann Majer, Co-PI: Roman Trötschel); Funded by the German Research Foundation (DFG)
- Resource-allocations in distribution vs contribution negotiations: Bargaining the collectivization and privatization of benefits and burdens (PIs: Roman Trötschel, Hong Zhang, Simon Moran, Ilana Ritov; Co-PIs: Marie van Treek, Johann Majer, Kai Zhang); Funded by the Volkswagen-Foundation (VW-Stiftung)
- Achieving Sustainable Agreements in Labor Negotiations: Evaluating a Mindset-Based Negotiation Training (PI: Roman Trötschel; Co-PI: Marco Warsitzka, Michel Mann, Joachim Hüffmeier); Funded by the Hans-Böckler-Foundation
- Sustainable solutions in intra- and intergenerational conflicts (PI: Johann Majer, Marie van Treek; Co-PI: Roman Trötschel, Hong Zhang); Funded by the Leuphana-Research-Fund
- Strategic agenda setting in integrative negotiations under time constraints (PI: Hong Zhang; Co-PI: Roman Trötschel) Funded by the Leuphana-Research-Fund
- Dealing with Deals implying a Great Deal of Uncertainty, Incalculability, and Unpredictability in Negotiations (PI: Marco Schauer; Co-PI; Roman Trötschel, Johann Majer)
- Negotiating Right of Ownership vs. Right of Use: Achieving Sustainable Negotiation Agreements through the Principles of Commoning (PI: Roman Trötschel; Co-PI: Caroline Heydenbluth, Hong Zhang, Hillie Aalderling)
- Integrative Mindsets and the Solution of Value Conflicts (PI: Carolin Schuster, Co-PI: Roman Trötschel, Fieke Harrinck)
Research interests
- cognitive and motivational processes in negotiations (perspective taking, mental accounting, anchoring, cognitive biases, fixed-pie perception, framing, temporal construal, uncertainty, incalculability, and unpredictability)
- Sustainable conflict solutions and negotiations (intragenerational vs. intergenerational conflicts, externalities, political communication, representative negotiations)
- Social-dilemma negotiations (resource-contribution vs. distribution negotiations; negotiations on commons)
- Third-party intervention (arbitration, mediation)
- Group-processes and social identity (process losses and gains, individual vs. collective identity)
- Self-regulation in negotiations (goal setting and planing)
Teaching
BSc Psychology
- Introduction to the Discipline: Psychology
- Social Psychology
- Empircal Research Project
- Advanced Topics in Empircal Research Methods
- Advanced Topics in Developmental, Differential, and Social Psychology
MSc International Research Mastter in Work and Organizational Psychology
- International and intercultural Negotiations
MSc Psychology and Sustainability
- Psychology and Society: Political Negotiations and Sustainability
- Transdisciplinary Research Project
Keywords
- Psychology
- Social Psychology
- Political Psychology
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 3 Good Health and Well-being
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SDG 4 Quality Education
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SDG 7 Affordable and Clean Energy
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SDG 8 Decent Work and Economic Growth
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SDG 10 Reduced Inequalities
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SDG 17 Partnerships for the Goals
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Research collaborations from the last five years
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Mental Accounting in Negotiations with Externalities
Trötschel, R. (Project manager, academic)
01.08.24 → 31.03.28
Project: Research
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The Interplay of Interpersonal and Intrapersonal Conflicts as a Barrier to Sustainable Solutions
Majer, J. (Project manager, academic) & Trötschel, R. (Project manager, academic)
01.01.21 → 31.03.24
Project: Research
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KEMOV: Konzeption und Evaluierung eines Mindset-orientierten Verhandlungstrainings
Trötschel, R. (Project manager, academic), Warsitzka, M. (Project manager, academic) & Mann, M. (Project staff)
01.08.20 → 15.10.23
Project: Research
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Sustainable Solutions in Intergenerational Conflicts
Majer, J. (Project manager, academic), Schütte, C. (Project staff) & Trötschel, R. (Partner)
01.05.19 → 30.04.21
Project: Research
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Mental Accounting in Allocation Negotiations
Trötschel, R. (Project manager, academic), Majer, J. (Project staff), Zhang, H. (Project manager, academic), Moran, S. (Project manager, academic) & Ritov, I. (Project manager, academic)
Ministry of Science and Culture of the state of Lower Saxony in Germany
01.11.18 → 31.07.22
Project: Research
Research output
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Playing it Safe: Negotiators Avoid Uncertainty and Reach Safer, But Less Integrative Agreements
Schauer, M., Majer, J. M., Heydenbluth, C. & Trötschel, R., 07.2026, In: Journal of Experimental Social Psychology. 125, 33 p., 104924.Research output: Journal contributions › Journal articles › Research › peer-review
Open Access -
Structuring success: How issue-packaging agendas foster better joint outcomes in multi-issue negotiations
Zhang, H., Geiger, I., Majer, J. M. & Trötschel, R., 03.2026, In: Journal of Experimental Social Psychology. 123, 9 p., 104856.Research output: Journal contributions › Journal articles › Research › peer-review
Open Access -
How, when and why do negotiators use reference points? A qualitative interview study with negotiation practitioners
Mann, M., Trötschel, R., Warsitzka, M. & Hüffmeier, J., 28.04.2025, In: International Journal of Conflict Management. 36, 3, p. 481-513 33 p.Research output: Journal contributions › Journal articles › Research › peer-review
Open Access1 Citation (Scopus) -
How Do Negotiators Resolve Conflict Over Resources of Changing Value: The Role of Trust in Sequential Negotiations
Heydenbluth, C., Aaldering, H., Zhang, H., Majer, J. M. & Trötschel, R., 01.12.2025, (E-pub ahead of print) In: Journal of Experimental Psychology: Applied. 20 p.Research output: Journal contributions › Journal articles › Research › peer-review
Open Access -
Negotiating With Yourself and Winning: The Dual Commitment Model for Intrapersonal Sustainability Goal Conflicts
Sevincer, A. T., Majer, J. M. & Trötschel, R., 2025, (Accepted/In press) In: Motivation Science.Research output: Journal contributions › Journal articles › Research › peer-review
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"Holzbein Kiel" oder: Wie treffen Gruppen gute Entscheidungen?
Mann, M. (Speaker), Warsitzka, M. (Speaker), Trötschel, R. (Speaker) & Hüffmeier, J. (Speaker)
22.06.2023Activity: Talk or presentation › Conference Presentations › Education
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UNITED we stand: A principle-based negotiation training for collective bargaining
Mann, M. (Speaker), Warsitzka, M. (Speaker), Hüffmeier, J. (Speaker) & Trötschel, R. (Speaker)
18.05.2023Activity: Talk or presentation › Conference Presentations › Education
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How, when, and why do negotiators use reference points? A qualitative interview study with negotiation experts.
Mann, M. (Speaker), Warsitzka, M. (Coauthor), Trötschel, R. (Coauthor) & Hüffmeier, J. (Coauthor)
19.01.2023Activity: Talk or presentation › Conference Presentations › Research
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That is not enough–Or is it? A qualitative investigation of reference points in negotiations
Mann, M. (Speaker), Warsitzka, M. (Coauthor), Trötschel, R. (Coauthor) & Hüffmeier, J. (Coauthor)
11.11.2022Activity: Talk or presentation › Guest lectures › Research
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Referenzpunkte in der Verhandlungspraxis: Eine qualitative Studie zur Relevanz von Referenzpunkten in verschiedenen Verhandlungskontexten und -phasen
Mann, M. (Speaker), Warsitzka, M. (Coauthor), Trötschel, R. (Coauthor) & Hüffmeier, J. (Coauthor)
14.09.2022Activity: Talk or presentation › Conference Presentations › Research
Prizes
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Research Grant from DRRC, Kellogg School of Management – Research residency
Trötschel, R. (Recipient) & Zhang, H. (Recipient), 2016
Prize: external Prizes, scholarships, distinctions, appointments › Research
Press/Media
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The Price is Right: How to Get the Best Possible Outcome in Price Negotiations
Warsitzka, M., Mann, M., Schauer, M. & Trötschel, R.
06.02.25
1 Media contribution
Press/Media
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Klimaverhandlungen: Warum nachhaltige Lösungen so schwierig zu erreichen sind und wie es dennoch gelingen kann
Heydenbluth, C., Schauer, M. & Trötschel, R.
14.03.24
1 Media contribution
Press/Media
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Auf die Haltung kommt es an
Trötschel, R., Hüffmeier, J., Warsitzka, M. & Mann, M.
01.12.23
1 item of Media coverage
Press/Media
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Der Preis ist heiß: Wie man in Preisverhandlungen das Bestmögliche herausholt
Warsitzka, M., Mann, M., Schauer, M. & Trötschel, R.
01.12.22
1 Media contribution
Press/Media
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Gemeinsam statt einsam: Nachbarn in der Corona-Krise unterstützen
21.05.21
1 item of Media coverage
Press/Media
Datasets
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Data for: Whatever We Negotiate Is Not What I Like: How value-driven conflicts impact negotiation behaviors, outcomes, and subjective evaluations
Schuster, C. (Creator), Majer, J. M. (Creator) & Trötschel, R. (Creator), Mendeley Data, 24.06.2020
DOI: 10.17632/jkbmvxh7fm
Dataset
File -
Strong or Weak Synergy? Revising the Assumption of Team-Related Advantages in Integrative Negotiations
Hüffmeier, J. (Creator), Zerres, A. (Creator), Freund, P. A. (Creator), Backhaus, K. (Creator), Trötschel, R. (Creator) & Hertel, G. (Creator), figshare LLP, 10.05.2018
DOI: 10.25384/sage.c.4104248, https://figshare.com/collections/Strong_or_Weak_Synergy_Revising_the_Assumption_of_Team-Related_Advantages_in__Integrative_Negotiations/4104248/1
Dataset
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Strong or Weak Synergy? Revising the Assumption of Team-Related Advantages in Integrative Negotiations
Hüffmeier, J. (Creator), Zerres, A. (Creator), Freund, P. A. (Creator), Backhaus, K. (Creator), Trötschel, R. (Creator) & Hertel, G. (Creator), figshare LLP, 2018
Dataset