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Treatment Evaluation in the Presence of Sample Selection

Sample selection and attrition are inherent in a range of treatment evaluation problems such as the estimation of the returns to schooling or training. Conventional estimators tackling selection bias typically rely on restrictive functional form assumptions that are unlikely to hold in reality. This paper shows identification of average and quantile treatment effects in the presence…

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English / 16/06/2013

The performance of estimators based on the propensity score

We investigate the finite sample properties of a large number of estimators for the average treatment effect on the treated that are suitable when adjustment for observed covariates is required, like inverse probability weighting, kernel and other variants of matching, as well as different parametric models. The simulation design used is based on real data usually employed for the…

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English / 27/02/2013

The Distance Puzzle and Low‐Income Countries: An Update

The ‘distance effect' measuring the elasticity of trade flows to distance has been found to be rising since the early 1970s in a host of studies based on the gravity model, leading observers to call it the ‘distance puzzle'. However, this puzzle is regularly challenged by new developments in the specification of the gravity equation or in its estimations. We propose an…

Institution partenaire

Université de Genève

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English / 01/01/2013

Trade Diversification, Income, and Growth: What Do We Know?

This paper surveys the empirical literature on export and import diversification and its linkages with growth. We review widely used measures of diversification and the evidence about their evolution focusing on how export diversification relates to trade liberalization and economic development. We also discuss the linkages between trade diversification and productivity at the firm…

Institution partenaire

Université de Genève

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English / 01/01/2013

Testing the validity of the sibling sex ratio instrument

We test the validity of the sibling sex ratio instrument in Angrist and Evans (1998) using the methods proposed by Kitagawa (2008) and Huber and Mellace (2011). The sex ratio of the first two siblings is arguably randomly assigned and influences the probability of having a third child, which makes it a candidate instrument for fertility when estimating the effect of fertility on…

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English / 01/01/2013

The Effect of Firms' Partial Retirement Policies on the Labour Market Outcomes of their Employees

In this paper, we assess the impact of firms introducing part-time work schemes for gradual labour market exit of elderly workers on their employees' labour market outcomes. The analysis is based on unique linked employer-employee data that combine high-quality survey and administrative data. Our results suggest that partial or gradual retirement options offered by firms are an…

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English / 01/01/2013

Early Child Care and Child Development? For Whom it Works and Why

Many countries are currently expanding access to child care for young children. But
are all children equally likely to benefit from such expansions? We address this question by adopting a marginal treatment effects framework. We study the West German setting where high quality center - based care is severely rationed and use within state differences in child care supply as…

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English / 13/12/2012

Maternal Work Conditions and Child Development

How do maternal work conditions, such as psychological stress and physical hazards, affect children's development? Combining data from the Child-Development-Supplement of the Panel Study of Income Dynamics and the Occupational Information Network allows us to shed some light on this question. We employ various techniques including OLS with extensive controls, a value added…

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English / 01/12/2012

Identification of Average Treatment Effects in Social Experiments Under Alternative Forms of Attrition

As any empirical method used for causal analysis, social experiments are prone to attrition which may flaw the validity of the results. This paper considers the problem of partially missing outcomes in experiments. Firstly, it systematically reveals under which forms of attrition - in terms of its relation to observable and/or unobservable factors - experiments do (not) yield causal…

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English / 01/05/2012

The Willingness to Pay for Job Amenities: Evidence from Mothers' Return to Work

The author examines the extent to which mothers are willing to trade wages for job flexibility within the context of maternity leave. The key aspect of this framework is that mothers can decide whether and when to return to their guaranteed job. In contrast to previous studies that analyze the job search of employed workers, this model does not need to observe the wage/amenity offer…

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English / 01/04/2012

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