Co-auteur
  • BONHOMME Stéphane (10)
  • POSTEL VINAY Fabien (8)
  • MAGNAC Thierry (7)
  • MEGHIR Costas (7)
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Type de Document
  • Article (47)
  • Working paper (13)
  • Communication non publiée (4)
  • Thèse de doctorat (4)
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Cette thèse a pour objectif de mieux comprendre les évolutions majeurs de l'institution du mariage aux États-Unis au cours des 60 dernières années. Dans le premier chapitre, en collaboration avec Alfred Galichon et Marion Goussé, nous étendons le modèle d’équilibre du mariage de Gary Becker à l’analyse du mariage homosexuel et développons une méthode économétrique permettant d’étudier les schémas d’appariement chez les couples homosexuels. Nous discutons les différences dans les gains de mariage entre couples de même sexe et couples de sexe différent en utilisant un échantillon de ménages californiens pour la période allant de 2008 à 2012. Dans le second chapitre, en collaboration avec Simon Weber, nous décrivons les tendances des marchés du mariage aux États-Unis de 1964 à 2017 en estimant la force de l'assortiment positif en ce qui concerne les caractéristiques socio-économiques de différentes cohortes. Ensuite, nous répondons aux questions suivantes : l'assortiment a-t-il augmenté avec le temps ? Si oui, pour quelles dimensions ? Et dans quelle mesure les changements dans les préférences matrimoniales peuvent-ils expliquer la hausse des inégalités ? Dans le troisième chapitre, je construis un nouveau modèle d’équilibre du marché du mariage caractérisé par des frictions de recherche, divorce endogène, vieillissement et mobilité salariale. J’estime le modèle avec des données américaines pour deux périodes distinctes, les années 1970 et 2000, puis je fournis une évaluation quantitative de l’impact des modifications de la distribution des salaires sur le déclin du mariage et leurs conséquences pour le bien-être de différents groupes de la population.

in COGITO, la lettre de la recherche à Sciences Po Publié en 2018-04
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Y a t-il plus de chômeurs qualifiés lorsque l’économie est en récession ? Les chômeurs sont-ils alors plus souvent contraints d’accepter des emplois de moindre qualité ? À l’inverse, les employés trouvent-ils plus facilement de meilleurs emplois lorsque l’économie rebondit ? Pour répondre à ces questions, Jean-Marc Robin, chercheur au Département d’économie de Sciences Po, et Jeremy Lise, Associate Professor à l’Université du Minnesota, ont élaboré un modèle macroéconomique très riche qu’ils ont calibré sur données américaines. Ils en ont fait l’exposé dans la très prestigieuse The American Economic Review : The Macro-dynamics of Sorting between Workers and Firms. Aperçu.

in Journal of Econometrics Publié en 2017-12
BONHOMME Stéphane
JOCHMANS Koen
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We propose a two-step method to nonparametrically estimate multivariate models in which the observed outcomes are independent conditional on a discrete latent variable. Applications include microeconometric models with unobserved types of agents, regime-switching models, and models with misclassification error. In the first step, we estimate weights that transform moments of the marginal distribution of the data into moments of the conditional distribution of the data for given values of the latent variable. In the second step, these conditional moments are estimated as weighted sample averages. We illustrate the method by estimating a model of wages with unobserved heterogeneity on PSID data.

in Labour Economics Publié en 2017-06
GOUSSE Marion
JACQUEMET Nicolas
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We document changes in labour supply, wage and education by gender and marital status using the British Household Panel Survey, 1991-2008, and seek to disentangle the main channels behind these changes. To this end, we use a version of Goussé et al. (2016)'s search-matching model of the marriage market with labour supply, which does not use information on home production time inputs. We derive conditions under which the model is identified. We estimate different parameters for each year. This allows us to quantify how much of the changes in labour supply, wage and education by gender and marital status depends on changes in the preferences for leisure of men and women and how much depends on changes in homophily.

in American Economic Review Publié en 2017-04
LISE Jeremy
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We develop an equilibrium model of on-the-job search with ex ante heterogeneous workers and firms, aggregate uncertainty, and vacancy creation. The model produces rich dynamics in which the distributions of unemployed workers, vacancies, and worker-firm matches evolve stochastically over time. We prove that the surplus function, which fully characterizes the match value and the mobility decision of workers, does not depend on these distributions. This result means the model is tractable and can be estimated. We illustrate the quantitative implications of the model by fitting to US aggregate labor market data from 1951-2012. The model has rich implications for the cyclical dynamics of the distribution of skills of the unemployed, the distribution of types of vacancies posted, and sorting between heterogeneous workers and firms.

in Quantitative Economics Publié en 2016-11
GARY-BOBO Robert
GOUSSE Marion
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We study the treatment effect of grade retention using a panel of French junior high-school students, taking unobserved heterogeneity and the endogeneity of grade repetitions into account. We specify a multistage model of human-capital accumulation with a finite number of types representing unobserved individual characteristics. Class-size and latent student-performance indices are assumed to follow finite mixtures of normal distributions. Grade retention may increase or decrease the student’s knowledge capital in a type-dependent way. Our estimation results show that the average treatment effect on the treated (ATT) of grade retention on test scores is positive but small at the end of grade 9. Treatment effects are heterogeneous: we find that the ATT of grade retention is higher for the weakest students. We also show that class size is endogenous and tends to increase with unobserved student ability. The average treatment effect of grade retention is negative, again with the exception of the weakest group of students. Grade repetitions reduce the probability of access to grade 9 of all student types.

in Annals of Statistics Publié en 2016
BONHOMME Stéphane
JOCHMANS Koen
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A constructive proof of identification of multilinear decompositions of multiway arrays is presented. It can be applied to show identification in a variety of multivariate latent structures. Examples are finite-mixture models and hidden Markov models. The key step to show identification is the joint diagonalization of a set of matrices in the same non-orthogonal basis. An estimator of the latent-structure model may then be based on a sample version of this joint-diagonalization problem. Algorithms are available for computation and we derive distribution theory. We further develop asymptotic theory for orthogonal-series estimators of component densities in mixture models and emission densities in hidden Markov models.

in Review of Economic Dynamics Publié en 2016-01
LISE Jeremy
MEGHIR Costas
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We develop an empirical search-matching model which is suitable for analyzing the wage, employment and welfare impact of regulation in a labor market with heterogeneous workers and jobs. To achieve this we develop an equilibrium model of wage determination and employment which extends the current literature on equilibrium wage determination with matching and provides a bridge between some of the most prominent macro models and microeconometric research. The model incorporates productivity shocks, long-term contracts, on-the-job search and counter-offers. Importantly, the model allows for the possibility of assortative matching between workers and jobs due to complementarities between worker and job characteristics. We use the model to estimate the potential gain from optimal regulation and we consider the potential gains and redistributive impacts from optimal unemployment benefit policy. Here optimal policy is defined as that which maximizes total output and home production, accounting for the various constraints that arise from search frictions. The model is estimated on the NLSY using the method of moments.

in American Economic Review Publié en 2016
LISE Jeremy
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We develop an equilibrium model of on-the-job search with ex ante heterogeneous workers and firms, aggregate uncertainty, and vacancy creation. The model produces rich dynamics in which the distributions of unemployed workers, vacancies, and worker-firm matches evolve stochastically over time. We prove that the surplus function, which fully characterizes the match value and the mobility decision of workers, does not depend on these distributions. This result means the model is tractable and can be estimated. We illustrate the quantitative implications of the model by fitting to US aggregate labor market data from 1951–2012. The model has rich implications for the cyclical dynamics of the distribution of skills of the unemployed, the distribution of types of vacancies posted, and sorting between heterogeneous workers and firms.

in Labour Economics Publié en 2016
MURTIN Fabrice
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We quantify the contribution of labor market reforms to unemployment dynamics in nine OECD countries (Australia, France, Germany, Japan, Portugal, Spain, Sweden, UK, US). We estimate a dynamic stochastic search-matching model with heterogeneous workers and aggregate productivity shocks. The heterogeneous-worker mechanism proposed by Robin (2011) explains unemployment volatility by productivity shocks well in all countries. Placement and employment services, UI benefit reduction and product market deregulation are found to be the most prominent policy levers for unemployment reduction. Business cycle shocks and LMPs explain about the same share of unemployment volatility (except for Japan, Portugal and the US).

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