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Publié en 2020-10 Collection Sciences Po LIEPP Working Paper : 111
GIVORD Pauline
SUAREZ Milena
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This paper presents a new method that goes beyond the measurement of average value-added of schools by measuring whether schools mitigate or intensify grades dispersion among initially similar students. In practice, school value-added is estimated at different levels of final achieve- ments’ distribution by quantile regressions with school specific fixed effects. This method is applied using exhaustive data of the 2015 French high-school diploma and controlling for initial achievements and socio-economic background. Results suggest that almost one-sixth of the high schools significantly reduce, or on the contrary increase, the dispersion in final grades which were expected given the initial characteristics of their intake.

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This paper uses a difference-in-differences (DID) framework to estimate the impact of Non-Pharmaceutical Interventions (NPIs) used to fight the 1918 influenza pandemic and control the resultant mortality in 43 U.S. cities. The results suggest that NPIs such as school closures and social distancing, as implemented in 1918, and when applied for a relatively long and sustained time, might have reduced individual and herd immunity and the population general health condition, thereby leading to a significantly higher number of deaths in subsequent years.

Publié en 2020-09 Collection Sciences Po LIEPP Working paper : 110
VERTIER Paul
GAMALERIO Matteo
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Large migrant inflows have in the past spurred anti-immigrant sentiment, but is there a way small inflows can have a different impact? In this paper, we exploit the redistribution of migrants in the aftermath of the dismantling of the “Calais Jungle” in France to study the impact of the exposure to few migrants. Using an instrumental variables approach, we find that in the presence of a migrant center (CAO), the percentage growth rate of vote shares for the main far-right party (Front National, our proxy for anti-immigrant sentiment) between 2012 and 2017 is reduced by about 12.3 percentage points. Given that the Front National vote share increased by 20% on average between 2012 and 2017 in French municipalities, this estimation suggests that the growth rate of Front National votes in municipalities with a CAO was only 40% compared to the increase in municipalities without a CAO (which corresponds to a 3.9 percentage points lower increase). These effects, which dissipate spatially and depend on city characteristics, and crucially on the inflow’s size, point towards the contact hypothesis (Allport (1954)).

Publié en 2020-04 Collection Sciences Po LIEPP Working Paper : 109
SHANDRA Carrie
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Objectives: Patterns of healthy leisure are dependent upon age, but people with disabilities are particularly susceptible to passive and disengaged types of activities. This study evaluates how individuals with disabilities spend their time in passive, active, social, and isolated forms of leisure over the life course, and how these patterns vary by age. Methods: Nationally representative data are analyzed from 70,165 respondents aged 15 and over in the 2008, 2010, and 2012-2016 American Time Use Survey. Linear regression models estimate the association between disability and leisure time, net of self-rated health and sociodemographic controls. Results: People with disabilities report significantly more, and poorer quality, leisure than people without disabilities. The isolated leisure time of people with disabilities is most different from people without disabilities in later life—whereas differences in total and passive leisure time, by disability status, are greatest in midlife. Patterns vary by type of functional limitation. Discussion: People with disabilities spend less time in health-promoting forms of leisure at all ages, but these patterns are unique across midlife and older age.

Czechoslovakia, a newborn state in 1918, immediately faced interethnic conflict, threatening its survival. In other multinational places of interwar Central Europe, democracy rapidly collapsed, and most ethnic minorities became entrenched into a systemic opposition to the dominant nationality of their state. How could the Czechoslovak leaders of all nationalities overcome this state of tension and mistrust? How would leaders shape their preferences and strategies be shaped? Would cooperation prove to be a better option than systematic rejection of a common polity? To what extent did the imperial experience of interethnic cooperation survive the war and remain a useful frame for at least some part of the political leadership? This paper studies how and why interethnic cooperation was successful. It pursues two directions. First, it considers how biographies and individual trajectories of leaders inform us about the strategies adopted vis-à-vis the minority issue. Then, it assesses how documents from the relevant ministries controlled by German-speaking ministers help decipher public policy choices and reassess the importance of the "national question" in the everyday routine of these institutions.

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Until now, the literature on opposition or resistance to regional integration has concentrated on the European Union (UE). So far, no systematic attempt has been pursued to explain opposition to regional integration in Latin America and identify its main influential factors. Based on Latinobarometro surveys, two main findings have emerged from this paper. First, opposition to regional integration is not a generalised attitude among Latin Americans. Secondly, the way in which citizens across Latin America evaluate regional integration is strongly influenced by the same predictors as in the EU: citizens' assessments of economic performance (both at the individual and national level), education, ideology, age, and income. Thus, socio-economic variables have proven to be directly linked to support for/opposition to economic integration. If Latin America continues along its recent path of economic growth these findings imply that it will likely see stable high support for regional integration. Conversely, the less that Latin America prospers from regional trade and the more that its economies deteriorate, the lesser support there will be for economic integration.

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The popularity of labels as tools of government is growing in many policy areas. This working paper focuses on the creation and the implementation of three different public labels in the public health field. Granted by the States or other public authorities, those labels reward distinctively organizations for their contribution to a public cause. Governance by labels relies on the mechanisms of market competition and of social distinction at play within a field, to orient actors towards opinions that governments consider to be in the public interest. This working paper nevertheless shows the difficulties to implement effectively that kind of soft policy tools: for them to affect firms and consumers' behaviours, they have to integrate many conflicting objectives and interests at the same time, which is rarely the case. We actually show, in our three case studies, that governing the market through labels implies governing the labels themselves, by carefully selecting their grantee, promoting them to both consumers and companies, and struggling against other challenger labels or market intermediaries. It is not an uncommon paradox that these labels that are entrusted with such a high power of "changing the world", have been finally stripped of any power.

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Ce document propose une nouvelle méthode de décomposition des indices de ségrégation, lorsque les unités sont réparties suivant deux partitions non disjointes. Cette méthode est appliquée pour étudier comment la sectorisation et les choix parentaux contribuent à la ségrégation sociale dans les collèges français. A partir des données géolocalisées exhaustives sur trois zones urbaines, nous décomposons les indices de ségrégation entre collèges en fonction de la contribution de la ségrégation résidentielle et du contournement de la carte scolaire. Le choix d'une partie des parents de ne pas scolariser leur enfant dans le collège de secteur, contribue pour moitié à la ségrégation sociale à Paris, et pour plus de deux tiers dans les agglomérations de Bordeaux et de Clermond-Ferrand. Cet effet est surtout attribuable à la réduction de la diversité des origines sociales dans certains collèges publics, les familles évitant le collège de quartier pour un collège privé étant souvent les plus favorisées localement.

Publié en 2020-02 Collection Sciences Po LIEPP Working Paper : 104
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In this work, we assess how organization of recruitment in large companies affects ethnic discrimination. We consider large multi-establishment companies and distinguish two types of organization of recruitment: hiring made through a human resources (HR) department at a centralized level of the company and hiring made only at the level of the establishment concerned by the position, generally by managers in charge of recruitment. Our results indicate that access to a centralized HR department in the selection of applications has an important effect on the level of discrimination: this type of organization of recruitment results in a significant decrease in the probability that the applicant of presumed "French" origin is selected alone.

Publié en 2020-01 Collection Sciences Po LIEPP Working paper : 102
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Since mid-1990s social sciences have re-started to give attention to the role played by the state in promoting economic growth, with important contributions from economists, sociologists and political scientists. This attention further increased after the economic and financial crisis of 2007/08 with a rising strand of research that is focusing on the institutional foundations of different growth models in advanced economies. This paper is related to this wide strand of research and analyses how industrial policies can favor the emerging of institutional conditions that are conducive to economic growth. In particular, the paper analyzes the neglected relationship between public policies and labor productivity in OECD countries. The focus is on four policy arenas that have a direct impact on labor productivity: labor market, human capital, innovation and on the efficiency of public administration. The analysis underlines a strong association between labour productivity and public policies addressed to promote training and activation, tha quality of educational institutions and inter-institutional networks in innovation. Other kind of policies, such as those addressed to flexibilise the labour market or to reduce labour costs or to increase the average number of years of schooling seem to play a minor role.

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Le bruit médiatique autour des multinationales visées par la corruption affaiblit-il la capacité de leurs dirigeants à obtenir des gouvernements des décisions conformes à leurs préférences ? Pour répondre à cette question, cet article entreprend une comparaison intra-cas se déroulant au Québec et au Canada entre 2011 et 2018, et portant sur : les enquêtes et accusations de corruption touchant la multinationale du génie-conseil, SNC Lavalin; la couverture de ces événements dans la presse écrite, et les nouvelles règles de lutte à la corruption d'entreprise adoptées durant cette période par les gouvernements provincial et fédéral. Durant ces années, et malgré les mauvaises nouvelles concernant SNC Lavalin, les gouvernements provincial et fédéral ont pris des décisions permettant à la firme d'éviter une reconnaissance de culpabilité civile et criminelle, et de préserver ses contrats publics. Pour expliquer ces résultats, l'hypothèse du nationalisme économique comme "cadre" est mise de l'avant. Lorsque les sanctions pour punir les entreprises touchées par la corruption sont définies (framed) comme des coûts qui menacent l'économie nationale ou du pays, le bruit autour des scandales de corruption importe peu. Il est neutralisé par le nationalisme économique, que les dirigeants de firmes mobilisent pour construire des coalitions de soutien en faveur de politiques anticorruption plus clémentes; qui ne désavantagent pas "nos entreprises" face à leurs concurrents étrangers.

Publié en 2020-01 Collection Sciences Po LIEPP Working Paper : 103
LAI Tianjian
MCAVAY Haley
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Drawing on a unique, large sample survey from France, Trajectories and Origins (TeO), this article aims to disentangle the effects of migrants' initial legal status from their pre-migration characteristics on five outcomes : family income, unemployment, neighborhood income disadvantage, segregation and self-rated health. Findings show that outcomes vary by legal status, but that most of these disparities disappear once pre-migration variables are accounted for. Still, we find net effects of legal status for some categories. Asylum seekers tend to face greater disadvantage in terms of family income and segregation, while students report higher family income and lower neighborhood income disadvantage. Migrants with worker status or a French spouse permit also tend to experience less neighborhood income disadvantage and segregation. Yet interactions between legal status and country of origin show that these effects are not constant across groups. Sub-Saharan Africans and migrants from other non-European countries are the most strongly impacted by disadvantaged status.

Publié en 2020-01 Collection Sciences Po LIEPP Working Paper : 103
LAI Tianjian
MCAVAY Haley
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Drawing on a unique, large sample survey from France, Trajectories and Origins (TeO), this article aims to disentangle the effects of migrants' initial legal status from their pre-migration characteristics on five outcomes : family income, unemployment, neighborhood income disadvantage, segregation and self-rated health. Findings show that outcomes vary by legal status, but that most of these disparities disappear once pre-migration variables are accounted for. Still, we find net effects of legal status for some categories. Asylum seekers tend to face greater disadvantage in terms of family income and segregation, while students report higher family income and lower neighborhood income disadvantage. Migrants with worker status or a French spouse permit also tend to experience less neighborhood income disadvantage and segregation. Yet interactions between legal status and country of origin show that these effects are not constant across groups. Sub-Saharan Africans and migrants from other non-European countries are the most strongly impacted by disadvantaged status.

Publié en 2020-01 Collection Sciences Po LIEPP Working Paper : 101
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While ethnic minorities may ultimately strive for creating their own state, or joining an ethnic kin state, these options are rarely realistically feasible. In such conditions, I argue, that dominant ethnic minority representatives strive to collaborate with the ethnic majority, and pursue liberal political goals, such as the protection of minority rights and civil liberties, that would ensure the survival and wellbeing of all ethnic groups. This contrasts with much of the literature which sees ethnicity as a source of particularistic, rather than liberal, politics. However, I suggest that when the plausibility of secession or irredentism increases, ethnic representatives abandon their liberal collaborative aims, and rather seek to end their minority status through exit. I study these mechanisms on the case of the German minority in interwar Czechoslovakia. Using historical analysis and quantitative content analysis of parliamentary speeches between 1920 and 1938, I demonstrate that the political actions of ethnic minority representatives are circumstantial.

Publié en 2020-01 Collection Sciences Po LIEPP Working Paper : 100
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Can large immigration inflows impact electoral outcomes and specifically, what impact did immigration have on the vote in favour of leaving the European Union (Brexit) in the United Kingdom? In particular, I focus on how the increase in Polish immigration, the major group of immigrants post 2004, affected votes in favour of leaving the EU. I find a percentage point increase in Polish immigration to the UK to have caused an increase in votes in favour of Brexit of about 2.72-3.12 percentage points, depending on the specification. To obtain exogenous variation in Polish immigration, I collect data from the archives that reveals the location of Polish War Resettlement Camps after Word War II, which location is plausibly exogenous to current political outcomes. Discussing potential mechanisms, I examine public opinion data in the British Election Study 2015 and find evidence of adversity towards immigration to be a root cause. Other considerations such as the National Health Service (NHS), incumbency and the general trust in politicians as well as the political institutions seem not to play a role.

Publié en 2019-12 Collection Sciences Po LIEPP Working Paper : 98
CHAMBOULEYRON Emilio
VONNAK Reka
ASSIRELLI Giulia
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Over the past two decades, a growing number of randomised controlled trials have assessed the impact on children's language skills of interventions encouraging parents to read books to their children. We present the results of a meta-analysis of the impact of 30 such interventions. Results indicate that they are often ineffective, and that only one specific methodology (dialogic reading), displays systematically positive impacts. Moreover, effective interventions display weaker impacts on low-socioeconomic groups, thus raising equity issues, and on younger children. Our systematic analysis of the research designs of these studies points at three major weaknesses. First, only short-term outcomes are measured, most often within six months after the conclusion of the intervention, and even within such a narrow time window, we find indications that treatment impacts fade out. A second limitation concerns the limited range of outcomes measured (receptive or expressive vocabulary). Finally these studies display low external validity (ad hoc sampling, small sample sizes, lack of multi-site experiments, scant evidence outside Anglo-saxon countries).

Publié en 2019-11 Collection Sciences Po LIEPP Working Paper : 95
FERRERA Maurizio
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Do we need a more social UE – or even a fully-fledged European Social Union (ESU)? An increasing number of empirically oriented social scientists argue that we do. This paper how ESU could be pieced together by r-assembling what is already in place, exploiting in particular the potential of the European Pillar of Social Rights. The paper also discusses the rationales behind the ESU proposal. There is, first, a twofold functional rationale: the EU institutional asymmetry between market making and market corrective goals and policies generates perverse effects; EMU needs a number of social corollaries to effectively perform its mission and functions. But there is a second and equally important rationale, based on political factors. A tenet of political theory is that any territorially organized collectivity cannot survive and prosper without the diffuse support of its members. The latter rests however not only on effectiveness, but also on fairness. Citizens must feel that the territorial government abides by the general norm of somehow representing the collective interest, taking care of all sectors/strata of the population, however weak and peripheral. In order to be politically effective, Social Europe cannot however limit itself to enhancing its institutional strength and policy production. It must become more visible to ordinary citizens and provide them with direct tangible benefits.

Publié en 2019-11 Collection Sciences Po LIEPP Working Paper : 97
HURD Ian
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Scholarship on international law in political science is dominated by a liberal paradigm that seeks to distinguish legal forms from political ones. The liberal approach offers a consensual model of international law in which legalization is a manifestation of intergovernmental cooperation in the pursuit of mutual goals. These two assumptions - that law is cooperative and that cooperation is a normative good - lead liberal global governance scholars away from key political questions about international legalization : namely, who wins and who loses. This results in the pathologies that Judith Shklar identified as 'legalism', when legal processes appear as charmed and neutral alternatives to politics. This article examines the liberal framework on global governance and law and contrast it with a competing political view. I show the differences between the two and outline the competing research agendas and policy advice that follows from them. The liberal model leads to the policy suggestion that decisionmakers should comply with international law, for self-interested and for more universal reasons, while the political alternative sees compliance as advancing some interests against others. With different theories of how law and politics are related, the two lead to competing interpretations of history as well as different policy prescriptions.

Publié en 2019-11 Collection Sciences Po LIEPP Working Paper : 96
SHOMER Yael
RASCH Björn Erik
AKIRAV Osnat
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Most analyzes of government instability in parliamentary democracies rests on a standard definition of what counts as a new government. Three criteria are used. A new government exists whenever there is a new Prime Minister, after the occurrence of a general election, and whenever the partisan composition of the government changes. Obviously fruitful in many respects, the definition is problematic if we are interested in the political phenomenon of government stability and instability; governmental durability based on the standard definition of governments is not a valid and useful measure of stability in many parliamentary systems. We argue that this measure from one perspective is too inclusive (not any change in government's partisan composition signifies instability), and from another angle too narrow (focusing almost exclusively on a government as a whole.) We investigate how changes in conceptualization of what constitute new governments, affects the degree of instability in parliamentary democracies. Clearly, definitions make a difference and we demonstrate that countries might be characterized as unstable from one perspective, yet stable from another. Clearly, the commonly used definition of government used to measure government duration inflates instability, at least for some countries. We demonstrate that using more precise definitions of government longevity - ones that do not equate any changes in government's partisan composition as a sign of instability - yield important ramifications for the rank-order of countries' governments instability.

Publié en 2019-10 Collection Sciences Po LIEPP Working Paper : 94
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L’article porte sur les intermédiaires du droit, appréhendés par deux courants de recherche qui en proposent récemment des définitions. L'un, développé plutôt en science politique, étudie des intermédiaires du droit (regulatory intermediaries) qui recouvrent une série d’acteurs situés entre les régulateurs et les régulés (Levi-Faur et al., 2017 ; Bes, 2019), tandis que l'autre, enraciné dans l’approche Law and Society et la sociologie, analyse les intermédiaires du droit de manière plus large et bottom up, comme des acteurs rencontrant et maniant des règles juridiques dans leurs activités professionnelles, sans pour autant être des professionnels du droit (Edelman, 2016 ; Talesh et Pélisse, 2019 ; Billows and alii 2019). L'article passe en revue ces deux approches, en montrant leur proximité mais aussi leurs différences et en évoquant des exemples empiriques de ces intermédiaires du droit ancrés dans la seconde perspective évoquée, comme les managers et les syndicalistes en entreprises, les responsables de santé sécurité ou les conseillers en emploi dans les organisations privées ou publiques. Le papier souligne ensuite la nécessité d'étudier les travailleurs de première ligne (frontline workers) avec lesquels les intermédiaires du droit interagissent dans les organisations, afin de comprendre comment les règles juridiques et les réglementations sont mises en œuvre et influencent le travail dans les organisations. Il montre enfin comment les travailleurs de première ligne sont de plus en plus appelés à devenir eux-mêmes des intermédiaires du droit, non sans conséquences sur la responsabilisation accrue qui est attendue de ces travailleurs ordinaires.

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The increase in wealth-to-income ratios in the second half of XXth century has recently received much attention. We decompose the trend in physical capital and housing, further decomposed into structures and land. In four out of five major countries analyzed, the positive trend in capital-income ratio arises from housing and specifically from its land component. We therefore revisit the question of wealth inequality and taxation in adopting a Georgist perspective (from Henry George, 1879) subsequently endorsed by prominent economists. We introduce land and housing structures in Judd’s optimal taxation framework. We show that an optimal taxation implies a property tax on land and no tax on capital. When the range of property taxes is politically constrained, taxing the product of housing rents is not optimal, even with additional taxes on "imputed rents". Rent taxes are however less distortive than a capital tax. The distortion depends on the share of housing structures and how they react to the tax on rents. However, a tax on rents complemented by a subsidy on structures investments in rental housing units does almost as well as a land tax. As a side result, we find that Judd’s result of no second best capital taxation extends to a larger range of parameters at the steady-state.

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Shared book reading between parents and children is often regarded as a significant mediator of social inequalities in early skill development processes. We argue that socially biased gaps between parents in access to information about the benefits of this activity for school success contribute to inequalities between children in access to this activity and in their language development. We test this hypothesis with a large-scale field experiment assessing the causal impact of an information intervention targeting parents of pre-schoolers on both the frequency of shared book reading and the receptive vocabulary of children. Results indicate that low-educated parents are more reactive to this information intervention, with significant effects on the language development of their children. We conclude that information barriers on the potential of informal learning activities at home contribute to social inequalities in early childhood, and that removing these barriers is a cost-effective way to reduce these inequalities.

Publié en 2019-09 Collection Sciences Po LIEPP Working Paper : 91
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The paper claims forecasting is a process during which forecasts are regularly updates and revised. Paying attention to the dynamics of expectations provides the opportunity to study changes in expectations formed by professionals, and thus give insights into how their labor unfolds. Drawing upon data from a purposely-built database of forecasts running from Sep-tember 2006 to September 2017, linear and logistic regression models investigate the infor-mational and organizational grounds of forecasts revisions. It it suggests that similar forecasts form a consistent sequence, so that revisions mostly consist in the adjustments of ‘old’ fore-casts with respect to newly available information. By and large, forecasting means updating former forecasts. Besides, data shows the core activity of forecasting organizations, and in turn their audience, matter to understand the extent to which they revise their forecasts: de-spite what forecasters claim in interviews, public institutions, among which the IMF or the OECD, tend to revise their forecasts on a wider scale than private banks or insurance com-panies. Eventually, scrutinizing how forecasts revisions distribute according to the years dur-ing which they are produced, stress that during major economic crises, such as the Great Recession, forecasters not only revise their former expectations downward but also upward. This hints at a Durkheim-inspired interpretation of economic crises as re-opening the future.

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Functional foods have swept across France and Europe since the late 1980s. Margarines enriched with omega 3 or phytosterols, yoghurts enriched with bifidus or vitamin-rich food supplements... these foods with health claims have reopened the boundary erected over the course of the twentieth century between the markets for medicines, whose primary function is to treat the sick, and those for foods, whose primary function is to meet the nutritional needs of healthy people. They thus raise many issues for regulators, producers, distributors and consumers. Are they health products that can usefully contribute to the prevention of chronic diseases or marketing manipulations that are not of any health interest? Should they be regulated and marketed as drugs, as food or as a separate category? Drawing on significant contributions in economic history and sociology, this article analyzes the consequences of the classification of these products as medicines, foods or dietary supplements on their valuation and the structure of their markets. It also focuses on the boundary work in which industry and regulatory actors engage in order to “(re)classify” these products, and thereby “(re)structure” the markets in which they circulate. The first part of the article describes the process that led France to establish a boundary between the previously intertwined markets for medicines and foods over the course of the twentieth century, which has been blurred by the appearance of functional foods since the beginning of the 1980s. The second part deals with the efforts of French and European regulatory authorities and industry actors to renegociate these boundaries between the markets for medicines and foods bearing nutritional and health claims. We conclude this second part with a discussion of the consequences of this reframing for the reorganization of markets and the reevaluation of the health benefits and commercial advantages of these products.

Publié en 2019-05 Collection Sciences Po LIEPP Working paper : 89
PENG Ito
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Care economy refers to the sector of economic activities, both paid and unpaid, related to the provisions of social and material care, which contribute to nurturing and supporting the present and future populations. Broadly, it includes direct and indirect care of children, the elderly and the disabled, health care, education, and as well, financial and other personal and domestic services aimed at supporting and enhancing individual well-being. Although largely invisible and scarcely accounted in national account systems, such as GDP, care and care work is increasingly recognized as essential for the maintenance of capability and well-being of individuals, and for the functioning of society and the economy. In almost all high- and middle-income countries the combination of the shift from an industrial/manufacturing to a service-based economy and the steady socio-demographic changes over the last several decades have made care economy an increasingly relevant social, economic and political issue today. Yet, despite growing awareness, the concept of the care economy remains ambiguous and the research on the topic germinal. The objectives of this paper are to: 1) trace and elucidate the ideas around the care economy; 2) analyze key concepts and debates around the idea of the care economy that may contribute to future research; and 3) discuss a potential research and policy agenda for understanding care economies today. I draw mostly from feminist research within the fields of social policy and welfare states, economy, sociology and political economy, highlighting some of the key debates and areas of convergence.

Publié en 2019-04 Collection Sciences Po LIEPP Working paper : 87
BRICONGNE Jean-Charles
MATA GARCIA Nuria
TURRINI Alessandro
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Every year, in the macroeconomic imbalances procedure (MIP), the European Commission examines the economic situation of member States, decides whether to launch an in-depth-review (IDR) and classifies countries into several categories, ranking from "no imbalances" to "excessive imbalances". The European Commission then releases some "specific country recommendations" (CSRs), detailing the economic measures to take to address the challenges and the imbalances. This procedure has few equivalents in the world and, in that context, the question of the extent to which the pressure stemming from the MIP procedure can incite member States to implement reforms can be raised. It is found that the pressure induced by the MIP classification is associated with more progress, whatever the regression used and whatever the controls. Besides, if control variables' coefficients are not always significant depending on the regressions, their signs are as expected: difficult or politically/socially sensitive recommendations are associated with less progress, especially in the area of structural reforms and public finances. As regards political factors, progress is relatively less important when the mandates are getting close to their ends than for newly elected governments.

En éducation, les effets de pairs résultent des différents types d’interactions entre élèves, au sein d’une même classe ou d’un même établissement. Toutefois, caractériser la nature et mesurer l’influence de ces interactions pose des problèmes méthodologiques substantiels. Ce document vise à présenter les difficultés relatives à la mesure des effets de pairs en éducation, ainsi que les résultats des recherches qui leur ont été consacrées dans l’enseignement primaire et secondaire. Au sein d’un établissement, les élèves sont influencés par la composition socio-économique et le niveau scolaire de leurs pairs. Les élèves de milieu défavorisé, ou en difficulté scolaire, y sont en général plus sensibles. En raison de tels effets, les phénomènes de ségrégation peuvent aggraver les inégalités scolaires. Les résultats des recherches relatives aux effets de pairs ne sont toutefois pas convergents.

Publié en 2019-04 Collection Sciences Po LIEPP Working paper : 88
ABRAMS David
PHILIPPE Arnaud
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In this paper, we show that sentencing norms vary widely even across geographically close units. By examining North Carolina’s unique judicial rotation system, we show that judges arriving in a new court gradually converge to local sentencing norms. We document factors that facilitate this convergence and show that sentencing norms are predicted by preferences of the local constituents. We build on these empirical results to analyze theoretically the delegation trade-off faced by a social planner: the judge can learn the local norm, but only at the cost of potential capture.

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De nombreuses recherches ont montré l’existence de désavantages en emploi pour les personnes handicapées par rapport aux personnes sans handicap. En revanche, la façon dont ces disparités se déclinent au sein de la population handicapée a peu été explorée. Cette recherche exploite la vague 2011 de l’Enquête Emploi en Continu et son module ad-hoc Insertion professionnelle des personnes handicapées pour quantifier les inégalités (pré)professionnelles rencontrées par des personnes ayant grandi avec des handicaps, en distinguant les situations des personnes selon la nature de leurs limitations (motrices, visuelles, auditives, cognitives, multiples) et de leurs problèmes de santé (maladies chroniques, troubles psychiques). Le déploiement des inégalités au fil du cycle de vie est appréhendé par l’examen d’indicateurs successifs : niveau d’études, inactivité, forme d’inoccupation, niveau professionnel, niveau de revenus du travail. Des régressions logistiques dégagent des effets-propres des types de handicap, avant et après introduction de différentes variables de contrôle (déterminants socio-démographiques, expérience scolaire, accomplissements antérieurs dans le parcours). Des parcours contrastés se dessinent, avec, à un extrême, la survenue précoce de forts désavantages pour les personnes avec des limitations cognitives, à l’autre extrême, une nette amplification des écarts après l’entrée sur le marché du travail pour les personnes avec des limitations visuelles ou motrices, et entre ces deux pôles, des profils intermédiaires pour les personnes avec des limitations physiques multiples, des troubles psychiques ou des maladies chroniques. Le niveau absolu de désavantage est plus faible pour les personnes avec des limitations auditives ou avec des limitations de degré modéré. Plusieurs pistes sont avancées pour interpréter ces variations ; certaines hypothèses sont spécifiques aux sous-populations handicapées, d’autres identifient des ressorts inégalitaires communs.

Publié en 2019-03 Collection Sciences Po LIEPP Working Paper : 85
CARBONNIER Clément
MALGOUYRES Clément
PY Loriane
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The present paper sheds new light on the incidence of firm taxation by exploiting the design of a large-scale corporate income tax credit in France. The tax credit is proportional to the wage bill of workers paid below a hourly wage threshold, which induces a discontinuity in mandatory levies at the employee level. We use discontinuities at the employee level in order to estimate firm-level incidence. This turns out to be the relevant level for the effects of the policy, which would be undetectable with an estimation focused on the employee level impact of the shock. Relying on exhaustive matched employer-employee data, we find a discrepancy between the absence of incidence at the employee level and a substantial incidence on wages at the firm level, around 50%. We find more over that the policy in question has stark (anti)-redistributive effects. The tax cut is targeting the lowest part of wage earners, but the benefits accrue to other employees inside the firm, who earn substantially higher wages on average.

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