Working papers

Same Odds, Different Lists: The Format of Admission Chances in School Choice
Guillaume Haeringer, Lan Nguyen, Laetitia Placido, Silvio Ravaioli
Under review · Last draft: October 2026
Holding information fixed, showing admission chances as probabilities makes applicants with good odds add safety schools, cutting their risk of being unassigned from 23% to 14%; showing them as the composition of admitted students makes lists more ambitious.

Time as Insurance under Ambiguity: Experimental Evidence on Time Separability
Lorenzo Bastianello, Laetitia Placido
Under review · Last draft: October 2026
Subjects choose between state-contingent payment streams under ambiguity. Time separability fails on a large scale, and most violations are consistent with intertemporal hedging: people spread exposure to the unknown event across dates.

Publications

Learning by Consuming in the Lab
Louis Lévy-Garboua, Claire Owen, Laetitia Placido, Benoît Rapoport
Experimental Economics, 2026 (open access).

Testing Constant Absolute and Relative Ambiguity Aversion
Aurélien Baillon, Laetitia Placido
Journal of Economic Theory, 181: 309–332, 2019.

Experiments on Compound Risk in Relation to Simple Risk and to Ambiguity
Mohammed Abdellaoui, Peter Klibanoff, Laetitia Placido
Management Science, 61(6): 1306–1322, 2015. Online material

Ambiguity Models and the Machina Paradoxes
Aurélien Baillon, Olivier L’Haridon, Laetitia Placido
American Economic Review, 101(4): 1546–1560, 2011.

The Rich Domain of Uncertainty: Source Functions and Their Experimental Implementation
Mohammed Abdellaoui, Aurélien Baillon, Laetitia Placido, Peter P. Wakker
American Economic Review, 101(2): 695–723, 2011. Online material

Betting on Machina’s Reflection Example: An Experiment on Ambiguity
Olivier L’Haridon, Laetitia Placido
Theory and Decision, 69(3): 375–393, 2010.

An Allais Paradox for Generalized Expected Utility Theories?
Olivier L’Haridon, Laetitia Placido
Economics Bulletin, 4(19): 1–6, 2008.

In other fields

Investigating Perceptual Differences between Two Trumpets of the Same Model Type
Laetitia Placido, Adrien Mamou-Mani, David Sharp
Applied Acoustics, 72(12): 907–914, 2011.

Work in progress

Wealth Effects and Reference Points under Cumulative Prospect Theory
Guillaume Haeringer, Chantal Marlats, Laetitia Placido
How the reference point moves with wealth, what this implies for investment in a risky asset, and how investment choices can be used to identify the reference point.

Compound Risk and Ambiguity across Probability Levels
Mohammed Abdellaoui, Peter Klibanoff, Laetitia Placido
How attitudes toward compound risk and toward ambiguity vary across probability levels, separating likelihood insensitivity from pessimism.

Information, Consumption Diversity and Welfare
Anna Bernard, Louis Lévy-Garboua, Claire Owen, Laetitia Placido
How information about popularity and quality shapes consumers’ choices, the diversity of consumption and satisfaction, with a model of consumers who learn their tastes by consuming.

Testing Constant Absolute and Relative Ambiguity Aversion under Losses
Lorenzo Bastianello, Laetitia Placido
An online experiment on whether ambiguity aversion stays constant as losses become more or less severe. Funded by PSC-CUNY.

Attitudes toward Compound Risk in the Loss Domain
Mohammed Abdellaoui, Mohamed El Guide, Laetitia Placido, Hayat Zouiten
Attitudes toward simple and compound risk in gains and in losses, studied with prospect-theory models.

Teaching

Currently, at Baruch College

• Introduction to Microeconomics

• Behavioral Economics

• Advanced Microeconomics

• MBA

Past teaching

• Baruch College: Intermediate Microeconomics

• NYU Stern School of Business: Quantitative Economics/Industrial Organization (Fall 2018, 2019, 2020); Microeconomics with Calculus and Microeconomics with Algebra (since Fall 2022); MBA “Firms and Markets” (Summer 2022)

• Columbia University (Spring 2021): Microeconomics seminar (Decision making under risk, time and uncertainty)

• NYU College of Arts and Science: AP Microeconomics (Summer)

Music

Some old music productions: on iTunes. Synced on CNN, FOX News, TF1, France 2 & 3, Arte, M6, Travel Channel, MLB, RTL, NRJ12, SRF…

Some custom music: Leaving Brittany · Daktari

Last update: October 2026