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2020 - n° 142
We develop a statistical discrimination model where groups of workers (males-females) differ in the observability of their productivity signals by the evaluation committee. We assume that the informativeness of the productivity signals depends on the match between the potential worker and the interviewer: when both parties have similar backgrounds, the signal is likely to be more informative. Under this “homo-accuracy” bias, the group that is most represented in the evaluation committee generates more accurate signals, and, consequently, has a greater incentive to invest in human capital. This generates a discrimination trap. If, for some exogenous reason, one group is initially poorly evaluated (less represented into the evaluation committee), this translates into lower investment in human capital of individuals of such group, which leads to lower representation in the evaluation committee in the future, generating a persistent discrimination process. We explore this dynamic process and show that quotas may be effective to deal with this discrimination trap. In particular, we show that introducing a “temporary” quota allows to reach a steady state equilibrium with a higher welfare than the one obtained in the decentralized equilibrium in which talented workers of the discriminated group decide not to invest in human capital. Finally, if the discriminated group is underrepresented in the worker population (race), restoring efficiency requires to implement a “permanent” system of quotas.
J. Ignacio Conde-Ruiz , Juan José Ganuza, Paola Profeta
2011 - n° 40
This article analyzes social norms regulating selection of godparents in Italy and France and how they will be affected by demographic change. On the grounds of Vatican statistics and of the World Values Survey, it demonstrates that baptisms still occur for the vast majority of children in Catholic Europe and that birth rituals are considered important even by non-believers. Relying on historical data, it shows that the custom of selecting godparents from among kinsmen, currently dominant, is a recent development. A new survey about selection of godparents in Italy and France is used which shows that they are not chosen for religious, but for social-relational reasons. Selection of kinsmen is the norm, with uncles and aunts being the majority choice. For Italy, choice determinants are explored by means of multinomial regressions. The results are contrasted with demographic change to show that in lowest-low fertility countries current godparenthood models are bound to disappear.
Guido Alfani, Vincent Gourdon, Agnese Vitali
Keywords: godparenthood,godparents,spiritual kinship,demographic change,social change,social customs,social norms,baptism,lowest-low fertility
2021 - n° 141
The association between social classes and fertility behaviour remains undertheorized as the literature focused mostly on the differentials in education and income levels as determinants of fertility behaviour. By using data from the European Union Statistics on Income and Living Conditions (EU-SILC), which for many countries combine a cross-sectional and a longitudinal component, we aim at filling this gap in the literature. Hence, we first explore the association between social classes and fertility behaviour and the extent to which this association is moderated by education and income. Secondly, we consider how this association varies by parity. Results underline the role of social class in affecting individuals’ fertility, over and above education and income.
Teodora Maksimovic, Marco Albertini, Letizia Mencarini, Giorgio Piccitto
2008 - n° 15
We present an introduction to the NetLogo simulation environment using the Segregation Model presented by Nobel Prize Winner Thomas Schelling in 1978. While reviewing the model, its Netlogo implementation is described step by step, using visual tools accompanied by the code for programming in the Netlogo language. Two extensions to the original model are proposed and programmed. All the models are fully described in the text.
Fabrizio Iozzi
Keywords: NetLogo,Schelling,simulation,agent-based,segregation
2016 - n° 95
This paper relates social mobility and social stratification to higher education policy. We show that higher‐education policy which leads to differences in quality and per‐student expenditure as well as in admission procedures between standard and elite universities, is a key factor in generating permanent social stratification and social immobility. We develop an intergenerational model which shows that a two‐tier higher education characterised by a division between elite and standard universities can be a key factor in generating permanent social stratification, social immobility and self‐reproduction of the ‘elite’. In our approach, low mobility is essentially explained by the differences in quality and in selection between elite and standard universities. A key result is that the wider the quality gap and the difference in per‐student expenditures between elite and standard universities, the less social mobility. This is because a larger quality gap reinforces the weight of family backgrounds at the expense of personal ability. Our simulations show that this impact can be large. These findings provide theoretical bases for the impact of higher education policy on social mobility.
Elisa S. Brezis, Joel Hellier
Keywords: Elite,Higher Education,Intergenerational mobility,Social stratification
2020 - n° 137
Does removing the constraints of time and place of work increase the utility of workers and firms? We design a randomized experiment on a sample of workers in a large Italian company: workers are randomly divided into a treated group that engages in flexible space and time job (which we call “smart-working”) one day per week for 9 months and a control group that continues to work traditionally. By comparing the treated and control workers, we find causal evidence that the flexibility of smart-working increases the productivity of workers and improves their well-being and work-life balance. We also observe that the effects are stronger for women and that there are no significant spillover effects within workers of a team.
Marta Angelici , Paola Profeta,
2009 - n° 21
Agent-based modelling and numerical simulations are means that facilitate exploring the structural and dynamic characteristics of systems which may prove intractable with analytical methods. This contribution examines the issues related to them with a particular attention to their use in the study of social economic and ecological systems. Besides a general description, the possibilities, limitations and their relationship with other more traditional investigation methods are examined. Special focus is put on the assessment of their validation and reliability. Finally an application example is provided. A simple model is built to analyse the movements of tourists and the relationship between these and the attractiveness of a tourism destination. The results are discussed along with possible future developments.
Jacopo A. Baggio, Rodolfo Baggio
Keywords: agent-based models,simulations,complex systems,tourism destination
2011 - n° 39
In this paper, I investigate the role of family trajectory, i.e. the whole sequence of family events during the life course of early adults in shaping their health outcomes. I jointly consider union formation and childbearing, since the two life domains are highly connected and their intersections may have an effect on health outcomes. Data come from Wave I and Wave IV of the National Longitudinal Study of Adolescent Health (Add Health). The paper is divided in two parts. First, I focus on transitions and investigate if changes in timing (when events happen), quantum (what and how many transitions) and sequencing (in what order), have an effect on the health of young women. In the second part, I classify life course trajectories into six groups representing different ideal-types of family trajectories and I explore the association of these trajectories with health outcomes. Results suggest that family trajectories play an important role on different health outcomes. Controlling for selection and background characteristics, precocious and "non-normative" transitions are associated with lower self-reported health and higher propensity of smoking and drinking.
Nicola Barban
Keywords: sequence analysis,life course analysis,health outcomes,transition to adulthood
2015 - n° 82
This paper analyzes how advanced Medieval and Early Modern Italian economies attempted to cope with famines. First, it provides an overview of the occurrence of famines and food shortages in Italy from the fifteenth to the seventeenth century, underlining the connections with overall climatic and demographic trends. Second, it focuses on the 1590s famine (the worst to affect Italy in the period), providing a general discussion and interpretation of its causes and characteristics, and describing and evaluating the strategies for coping with the crisis that developed within the Republic of Genoa and the Duchy of Ferrara. The article argues that when such a large-scale food crisis as that of the 1590s occurred, public action played a key role in providing relief.
Guido Alfani
Keywords: famine; mortality crises; subsistence crises; Italy; early modern period; 1590s; markets integration; grain trade; agrarian innovation
2019 - n° 131
For a sample of Central and Eastern European countries, characterized by historically high female labor force participation and currently low fertility rates, we analyze whether fathers’ increased involvement in the family (housework and childcare) has the potential of increasing both fertility and maternal employment. Using two waves of the Generations and Gender Survey, we show that a higher fathers’ involvement in the family increases the subsequent likelihood that the mother has a second child and works full-time. Men’s fertility and work decisions are instead unrelated to mothers’ housework and childcare. We also show that fathers’ involvement in housework plays a more important role than involvement in childcare. The role of fathers’ involvement in housework is confirmed when we consider women who initially wanted or intended to have a child, women whose partner also wanted a child or women who intended to continue working.
Ester Fanelli, Paola Profeta
Keywords: Gender revolution,demographic trends,working mothers,gender roles,fertility