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Lucas SAGE

Thèse soutenue le 24 juin 2022

« Si semblables mais si différents. Une explication des écarts de salaires entre personnes similaires »

Directeur de thèse : Gianluca Manzo (GEMASS)
Directrice de thèse : Stefani Scherer (University of Trento)

Research interest

Economic sociology
Wage inequality
Quantitative sociology
Agent-based computational modeling

Conference presentation

June 2019 ” Inégalités entre et au sein des groupes sociaux “ Journée des doctorants du GEMASS, Sorbonne University – Paris
June 2019 “Is there accumulation of inequality? Comparative evidence from cohorts of labor market entrants in the UK and in Germany” Joint graduate conference, University Pompeu Fabra – Barcelona
Feb. 2019 “Is there accumulation of inequality? Evidence from two cohorts of UK labor market entrants” III Convegno Societa Italiana di sociologia economica, University Federico II – Naples
June 2017 “Unravelling or promoting ethnic integration in schools? A theoretical analysis of the effects of heterogenous ethic preferences on the dynamics of self organized school segregation” 10th conference of the international network of analytical sociologists, University of Oslo – Oslo

Education

2015-2017 : Ecole normale supérieure de Cachan (second concours)
2016 : M.Phil Sociology – Sorbonne University
2014 : M.A. Economics – Université Paris 1 Panthéon-Sorbonne – Magistère d’économie

Teaching assistant

2017-2019: Statistics (Bachelor 1st year, Sorbonne Université) – In French
2017-2019: Introduction to American sociology (Bachelor 2nd year, Sorbonne Université) – In French
2017-2020: Statistics (Bachelor 2nd year, Sorbonne Université) – In French
2019-2020: Introduction to R (Bachelor 3rd year, Sorbonne Université) – In French

Visiting

Mar. 2020 (to come): Visiting Ph.D. student – University of Essex – Host: Matteo Richiardi
Oct. 2016 – June 2017: Visiting student – University of Groningen – Host: Andreas Flache

Training

Jul. 2019: Summer Institute in computational social science (SICSS) – University of Bamberg

Recent publications by Lucas SAGE

The nonlinear nature of labor market sorting: explaining wage inequalities between and within sociodemographic groups

Lucas SAGE, The nonlinear nature of labor market sorting: explaining wage inequalities between and within sociodemographic groups, Sociodemographic groups with higher average wages also exhibit higher internal wage dispersion, partly explaining the overrepresentation of older, educated men in top wage percentiles. Despite being widely documented, the origins of this relationship remain poorly understood. This article proposes an explanation rooted in sorting—the tendency for workers who already command higher wages to end up in the organizations and occupations that pay the most. I argue that sorting is not merely positive but also nonlinear: its strength intensifies at higher wage levels. Because higher-wage groups experience stronger sorting, their internal wage dispersion is inflated, which contributes to the relationship between group mean wages and internal dispersion. Using French administrative data, I employ variance decompositions and simulations to quantify these effects. I find that nonlinear sorting accounts for 13% of the covariance between micro-group mean wages and internal dispersion, and for 25% of the variance in wage dispersion across groups. Simulations combined with variance function regression identify education and age as the primary dimensions along which nonlinear sorting operates. In addition, the study confirms and extends prior findings on positive sorting, showing that it accounts for 38% of between-group inequality., 2026

Luck and Predictability in the Life Course

Lucas SAGE, Luck and Predictability in the Life Course, With Arnout VAN DE RIJT, Fabrizio BERNARDI and William FOLLEY, Annual Review of Sociology, Vol. 52, 2026

Lucas SAGE, Reinforcement generates systematic differences without heterogeneity, With Alexandros Gelastopoulos and Arnout van de Rijt, PNAS, Vol. 122, No. 23, 2025

dans le numéro spécial 'Éthique de la recherche et méthodes en sociologie' coordonné par Gianluca MANZO

Lucas SAGE, dans le numéro spécial 'Éthique de la recherche et méthodes en sociologie' coordonné par Gianluca MANZO, L’Année sociologique, 2024/2 Vol. 74, 2024

The spreading of SARS-CoV-2: Interage contacts and networks degree distribution

Lucas SAGE, The spreading of SARS-CoV-2: Interage contacts and networks degree distribution, With Albertini M, Scherer S, PLoS ONE 16(8), 2021

Lucas SAGE, Can Ethnic Tolerance Curb Self-Reinforcing School Segregation? A Theoretical Agent Based Model, Journal of Artificial Societies and Social Simulation 24 (2) 2, 2021

All publications by Lucas SAGE