Learn more about LERN in our information brochure.
information brochure about LERN

LERN 2018

The next LERN Annual Research Meeting (only available in German) on will take place on 26th and 27th April at the Leibniz-Institut für Wissensmedien (IWM) in Tübingen.

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The next Forum On Educational Policy (information in German only). with the topic "Early Childhood Education" will take place on 25th September at the Landesvertretung Schleswig-Holstein in Berlin.

Foto (v.l.n.r): MNStudio/shutterstock.com, photodeti/123RF.com, auremar/123RF.com, Diego Cervo/shutterstock.com

Publications

Find below the latest news (RSS feed) form our LERN partners:

DIW on 22.05.2018, 06:00 h
The Joint Distribution of Net Worth and Pension Wealth in Germany


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DIW on 22.05.2018, 05:00 h
The German Socio-Economic Panel Study (SOEP)


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DIW on 22.05.2018, 05:00 h
Inequality-Minimization with a Given Public Budget

Abstract: We solve the problem of a social planner who seeks to minimize inequality via transfers with a fixed public budget in a distribution of exogenously given incomes. The appropriate solution method depends on the objective function: If it is convex, it can be solved by an interior-point algorithm. If it is quasiconvex, the bisection method can be used. Using artificial and real-world data, we implement the procedures and show that the optimal transfer scheme need not comply with a transfer scheme that perfectly equalizes incomes at the bottom of the distribution.
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DIW on 22.05.2018, 05:00 h
Distributional Effects of Subsidizing Retirement Savings Accounts: Evidence from Germany


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DIW on 22.05.2018, 05:00 h
Do Demographics Prevent Consumer Aggregates from Reflecting Micro-level Preferences?


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DIW on 22.05.2018, 04:00 h
Labor Supply Effects of Long?Term Care Reform in Germany

Abstract: Many informal caregivers are of working age, facing the double burden of providing care and working. Negative labor supply effects can severely reduce the comparative cost advantage of informal over formal care arrangements. When designing long?term care (LTC) policies, it is crucial to understand the effects not only on health outcomes but also on labor supply behavior of informal caregivers. We evaluate labor supply reactions to the introduction of the German long?term care insurance in 1995 using a difference?in?differences approach. The long?term care insurance changes the caregivers' trade?off between labor supply and care [...] ( more )

DIW on 18.05.2018, 12:00 h
The Effects of Pricing Waste Generation: A Synthetic Control Approach

Abstract: To internalize pollution externalities into household waste generation, Unit Pricing Systems (UPS) have been adopted worldwide. This paper evaluates the causal effects of a UPS on the disposal of municipal solid waste in Trento, Italy. To account for policy endogeneity due to unobservables, we employ the synthetic control method on a unique panel of monthly waste generation. Our results show that the policy was effective, with a significant decrease of the priced waste stream,unsorted waste, by 37.5%. This effect seems to be largely driven by behavioral changes towards waste avoidance (-8,6%) and a minor increase in recycling (+6,1%).
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DIW on 18.05.2018, 11:00 h
Regulatory Differences and International Financial Integration

Abstract: The Capital Markets Union (CMU) ? an initiative of the European Commission ? aims to unify and deepen capital markets across EU Member States by removing existing barriers to cross-border investment and, in particular, harmonizing financial and business regulations. However, harmonizing institutional frameworks across the EU Member States that historically have different legal traditions is difficult and requires time. This article summarizes important steps to harmonizing business and financial laws in the EU and discusses empirical and theoretical literature on the role of legal harmonization in deepening and better integrating [...] ( more )

DIW on 17.05.2018, 10:00 h
Who Is Cheating? The Role of Attendants, Risk Aversion, and Affluence

Abstract: This research integrates a standard ?cheating? experiment into a broad household survey and finds relationships between individual characteristics and cheating behavior. We allow for attendance of others at the cheating experiment, addressing the ?reputation to be seen as honest,? finding there is indeed less cheating with attendants. Regarding the preference for ?honesty,? we find two related attitudes: stronger risk aversion increases the costs of cheating, i.e. behaving against the norm, while affluence makes cheating costly, as it allows behaving honestly. The underlying experiment in rural Thailand reproduces stylized facts [...] ( more )

DIW on 16.05.2018, 01:00 h
An Offer that you Can't Refuse? Agrimafias and Migrant Labor on Vineyards in Southern Italy

Abstract: In the 2011 post-Arab Spring migration wave, over 64,000 migrants landed on the southern Italian coast, with many of them potentially working illegally on farms through caporalato, a widespread system of illegal recruitment of underpaid farm labor run by Italian agrimafias. To test this hypothesis, this paper evaluates the causal effects of the 2011 migration wave on reported labor productivity focusing on vineyards in southern Italy. Based on a dynamic panel data model, labor productivity is estimated to increase by about 11% on average for 2011 and 2012. We show that this corresponds to a total of around 10 million unreported work hours, [...] ( more )

DIW on 14.05.2018, 03:00 h
Evaluation of Research Careers Fully Acknowledging Open Science Practices


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DIW on 14.05.2018, 02:00 h
The Impact of Minimum Wages on Well-Being: Evidence from a Quasi-Experiment in Germany

Abstract: To analyze well-being effects of minimum wages, the introduction of a minimum wage in Germany in 2015 is used as a quasi-experiment. Based on the representative SOEP data, a difference-in-differences design compares the development of life, job, and pay satisfaction between those who are affected by the reform according to their pre-intervention wages and those who already have marginally higher wages so that they are not directly affected. The results show that the minimum wage has significantly positive effects on all considered dimensions of well-being, on average, with an increase in life satisfaction by 0.10 standard deviations (0.15 [...] ( more )

DIW on 14.05.2018, 02:00 h
Great Expectations: Reservation Wages and the Minimum Wage Reform

Abstract: We use the German Socio-Economic Panel to show that introducing a high-impact statutory minimum wage causes an increase in reservation wages of approximately 4 percent at the low end of the distribution. The shifts in reservation wages and observed wages due to the minimum wage reform are comparable in their magnitude. Additional results show that German citizens adjust their reservation wages more than immigrants. Moreover, suggestive evidence points to a compensation mechanism in which immigrants trade wage growth against job security.
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DIW on 14.05.2018, 02:00 h
Do Working Hours Affect Health? Evidence from Statutory Workweek Regulations in Germany

Abstract: This study estimates the causal effect of working hours on health. We deal with the endogeneity of working hours through instrumental variables techniques. In particular, we exploit exogenous variation in working hours from statutory workweek regulations in the German public sector as an instrumental variable. Using panel data, we run two-stage least squares regressions controlling for individual-specific unobserved heterogeneity. We find adverse consequences of increasing working hours on subjective and several objective health measures. The effects are mainly driven by women and parents of minor children who generally face heavier [...] ( more )

DIW on 09.05.2018, 04:00 h
Mandatory Day Care for Preschool Children Would Not Be an Effective Solution in Targeting Particular Children

Abstract: In Germany, around 94 percent of children between the ages of three and six attend a day care center. Regarding the remaining six percent, many experts have speculated that children, primarily those from socio-economically disadvantaged households, do not use day care. Based on data from the Socio-Economic Panel (SOEP) and the Families in Germany survey (FiD), the present study is one of the first representative studies to look at preschool children three and older who do not attend a day care center. The findings show that they are not necessarily from socio-economically disadvantaged homes. Some parents with high incomes and high levels of [...] ( more )

DIW on 08.05.2018, 03:00 h
Estimating a Latent Risk Premium in Exchange Rate Futures

Abstract: Using exchange rates futures instead of forwards completes the maturity spectrum of the correlation between the spot return and the premium. The correlation decreases with increasing maturity, presumably due to a latent risk premium. We hypothesize that the influence of the unobserved risk factor has a contract-specific risk component. Our main contribution is to control for the omitted variable bias by using a modified version of the CCE panel estimator in combination with futures data. This renders the coefficient on the futures premium insignificantly different from one. Subsequently, the contract-specific part is related to conventional [...] ( more )

DIW on 07.05.2018, 10:00 h
SOEP-IS 2016 – Fragebogen für die SOEP-Innovations-Stichprobe


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DIW on 07.05.2018, 10:00 h
SOEP-IS 2015 – Questionnaire for the SOEP Innovation Sample (Update soep.is.2016)


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DIW on 07.05.2018, 10:00 h
SOEP-IS 2016 – Questionnaire for the SOEP Innovation Sample


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DIW on 07.05.2018, 10:00 h
SOEP-IS 2015 – Fragebogen für die SOEP-Innovations-Stichprobe (Update soep.is.2016)


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DIW on 07.05.2018, 09:00 h
SOEP-IS 2016—PGEN: Person-related Status and Generated Variables


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DIW on 07.05.2018, 09:00 h
SOEP-IS 2016—KID: Pooled Dataset on Children


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DIW on 07.05.2018, 09:00 h
SOEP-IS 2016—INNO: Variables from the Innovation Modules


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DIW on 07.05.2018, 09:00 h
SOEP-IS 2016—P: Variables from the Individual Question Module


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DIW on 07.05.2018, 09:00 h
SOEP-IS 2016—INNO_H: Household-Variables from the Innovation Modules


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DIW on 07.05.2018, 09:00 h
SOEP-IS 2016—PBRUTTO: Person-related Gross File


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DIW on 07.05.2018, 09:00 h
SOEP-IS 2016—PPFAD: Person-related Meta-dataset


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DIW on 07.05.2018, 09:00 h
SOEP-IS 2016—IRISK: Decision from Description vs. Decision from Experience


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DIW on 04.05.2018, 12:00 h
SOEP-IS 2016—BIOAGE: Variables from the Modules of Questions on Children


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DIW on 04.05.2018, 12:00 h
SOEP-IS 2016—BIO: Variables from the Life Course Question Module


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DIW on 04.05.2018, 12:00 h
SOEP-IS 2016—BIOBIRTH: Birth Biography of Female and Male Respondents


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DIW on 04.05.2018, 03:00 h
SOEP-IS 2016—HGEN: Household-related Status and Generated Variables


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DIW on 04.05.2018, 03:00 h
Generation Expansion Planning under Uncertainty: An Application of Stochastic Methods to the German Electricity System

Abstract: Renewable energies are expected to be the main electricity generation source. However, the variability of renewable energy supply poses challenges to the generation expansion modelling as uncertainty of hourly generation need to be adequately taken into account. This paper analyzes the implications of different approaches to optimization under uncertainty, ranging from stochastic to robust optimization. We apply these specific approaches to the German electricity system in 2035 and compare them to a deterministic optimization for each realization of the uncertainty. We consider the availability of wind and solar generation as explicit [...] ( more )

DIW on 04.05.2018, 03:00 h
SOEP-IS 2016—IESM: Person-related ESM Data from Innovative ESM Module


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DIW on 04.05.2018, 03:00 h
SOEP-IS 2016—IDRM_ESM: Person-related DRM Data from Innovative ESM Module


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DIW on 04.05.2018, 03:00 h
SOEP-IS 2016—H: Variables from the Household Question Module


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DIW on 04.05.2018, 03:00 h
SOEP-IS 2016—IDRM: Person-related Data from Innovative DRM Module


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DIW on 04.05.2018, 03:00 h
SOEP-IS 2016—HBRUTTO: Household-related Gross File


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DIW on 04.05.2018, 03:00 h
SOEP-IS 2016—COGNIT: Cognitive Achievement Potentials


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