Mathieu Guigourez

PhD Candidate in Economics at Université Paris 1 Panthéon-Sorbonne, under the supervision of Dorian Jullien.
My PhD thesis is entitled Economic Rationality, Ecologic Responsibility.

Research

• My research aims to clarify the uses of the notions of economic rationality and ecologic responsibility in economic theories, modelling practices and normative valuation systems. Specifically, my research challenges standard frameworks of rational choice theory, climate ethics and environmental as well as climate economics in addressing new challenges of ecological governance.

• For now, my main focus revolves around:

1) the methods of pricing carbon emissions and their normative assumptions,

2) different conceptualisations of commitment in Rational Choice Theory, emphasising volitional reductions in carbon emissions.

• Besides, I am also interested in feminist epistemology and standpoint epistemologies and have organised a reading workshop linking feminist philosophers of science with modelling practices in economics.

Publications and working papers

• Guigourez, M. (2025). Commitment, Kantian economics and normative uncertainty: rethinking rational choice and individual responsibility in the wake of climate change. Journal of Economic Methodology, 1–20. https://doi.org/10.1080/1350178X.2025.2555821

• Guigourez, M. (2023) $10 a Ton of Carbon ? The Stern – Nordhaus Controversy: Epistemological and Ethical Issues.

• Guigourez, M. (2026) Taxing Carbon, Framing Responsibility: How Framing, Licensing, and Beliefs Shape Individual Responsibility under Carbon Taxes
https://shs.hal.science/halshs-05510153

• Cervesato, M. and Guigourez, M. (2026) Accounting for Ecological Choices through Individual Commitments in Collective Actions: The KOVENANT Model
https://shs.hal.science/halshs-04974741

Workshops and Conferences

• 17th Biennial International Network for Economic Method (INEM) Conference, University of Bayreuth. 17th-19th September 2025. Paper presentation: Taxing Carbon, Framing Responsibility: How Framing, Licensing, and Beliefs Shape Individual Responsibility under Carbon Taxes

• Third Summer School in Philosophy of Economics, Co-organized by Lake Como School, INEM, Insubria University, and the University of Milan. 23-28^th June 2024. Paper Presentation, Individual Responsibility under Normative Uncertainty: Can We Gamble on Climate Change ?

• 7^thInternational Conference of Economic Philosophy, « Market(s) and Democracy » organized by Reims University. 29-31^st May 2024.
Paper Presentation, Individual Responsibility under Normative Uncertainty: Can We Gamble on Climate Change ?

• Responsible Economics and Policymaking Workshop, organized by the TINT – Centre for Philosophy of Social Science, in collaboration with the IRN project “Justice and Interest” and the “Economics as Serviceable Social Knowledge” project. 26-27^th October 2023. Helsinki University

• 6^thInternational Conference of Economic Philosophy, « Economic Philosophy in the Age of the Anthropocene » organized by Sciences Po Lille, Lille University and CLERSE (UMR 8019). 29-1^st July 2023.
Paper Presentation, 10$ a Ton of Carbon ? The Stern-Nordhaus Controversy : epistemological and ethical issues.

• Ecologizing Economics: Reflexivity, Methods and Interdisciplinarity in the Age of Anthropocene Workshop, organized by the Young Scholar Initiative. June 2023. Sciences Po Lille.
Paper Presentation, 10$ a Ton of Carbon ? The Stern-Nordhaus Controversy : epistemological and ethical issues.

Teachings

General introduction to economics (1^styear, University Panthéon-Sorbonne)

• Introduction to microeconomics (how a market works: supply and demand curves, supply/demand shocks, elasticities, surplus, introduction of a tax/subsidy into a market ecc. The nature of competition: behavior of firms in perfect competition; brief overview of monopoly and duopoly).

• Introduction to macroeconomics (neoclassical theory: labor market, financial market, money market, Say’s Law and macroeconomic closure. Keynesian model, multipliers, fiscal and budgetary policy).

Mathematics and economic modelisation (1^st year, University Panthéon-Sorbonne)

• Teaching the use of mathematics by an economist.

• Method for solving a system of linear equations by substitution.

• Identify and characterize potential extrema or candidates for extremum.

Microeconomics (2^nd year, University Panthéon-Sorbonne)

• Imperfect competition (Natural / Regulated / Discriminating Monopolies; Cournot’s Duopoly, Bertrand’s Duopoly etc.)

• Game theory (Nash equilibrium, strategic behaviours with perfect and imperfect information)

Quantitative methods applied to social sciences (1^st year, University Panthéon-Sorbonne)

• Calculation of equilibrium of supply and demand, the study of marginal cost and average cost, the optimisation of profit or utility under budgetary constraints, and the marginal rate of substitution.

•The use of percentages is also reinvested and extended, as is knowledge of probability and statistics.

Contacts

Maison des Sciences Économiques – Université Paris 1 Panthéon-Sorbonne
112 Boulevard de l’hôpital, Paris 75013