WorldCat Identities

Huber, Martin

Works: 28 works in 53 publications in 2 languages and 110 library holdings
Roles: Author, Thesis advisor, Contributor, Editor
Classifications: RD563, 610
Publication Timeline
Most widely held works by Martin Huber
Does leaving welfare improve health? Evidence for Germany by Martin Huber( )

8 editions published in 2009 in English and held by 29 WorldCat member libraries worldwide

Using exceptionally rich linked administrative and survey information on German welfare recipients we investigate the health effects of transitions from welfare to employment and of assignments to welfare-to-work programmes. Applying semi-parametric propensity score matching estimators we find that employment substantially increases (mental) health. The positive effects are mainly driven by males and individuals with bad initial health conditions and are largest for males with poor health. In contrast, the effects of welfare-to-work programmes, including subsidized jobs, are ambiguous and statistically insignificant for most outcomes. Robustness checks that include a semi-parametric instrumental variable approach do not provide reasons for concern
Do German welfare to work programmes reduce welfare and increase work( )

9 editions published in 2009 in English and held by 26 WorldCat member libraries worldwide

Many Western economies have reformed their welfare systems with the aim of activating welfare recipients by increasing welfare-to-work programmes and job search enforcement. We evaluate the three most important German welfare-to-work programmes implemented after a major reform in January 2005 ("Hartz IV"). Our analysis is based on a unique combination of large scale survey and administrative data that is unusually rich with respect to individual, household, agency level, and regional information. We use this richness to allow for a selection-on-observables approach when doing the econometric evaluation. We find that short-term training programmes on average increase their participants' employment perspectives and that all programmes induce further programme participation. We also show that there is considerable effect heterogeneity across different subgroups of participants that could be exploited to improve the allocation of welfare recipients to the specific programmes and thus increase overall programme effectiveness. -- Welfare-to-work policies ; propensity score matching ; programme evaluation ; panel data ; targeting
The effect of firm's partial retirement policies on the labour market outcomes of their employees by Martin Huber( Book )

10 editions published in 2013 in English and held by 11 WorldCat member libraries worldwide

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 important tool to alleviate the negative effects of low labour market attachment of elderly workers in ageing societies. When combined with financial incentives to hire unemployed or young jobseekers as replacement, they seem to be particularly beneficial, especially when labour market conditions are difficult. Under such circumstances, they can even have positive spill-over effects on younger workers. Firms should thus be encouraged to offer such schemes
Treatment evaluation in the presence of sample selection by Martin Huber( Book )

1 edition published in 2009 in English and held by 3 WorldCat member libraries worldwide

Quantile regression in the presence of sample selection by Martin Huber( Book )

1 edition published in 2011 in English and held by 2 WorldCat member libraries worldwide

Most sample selection models assume that the errors are independent of the regressors. Under this assumption, all quantile and mean functions are parallel, which implies that quantile estimators cannot reveal any (per definition non-existing) heterogeneity. However, quantile estimators are useful for testing the independence assumption, because they are consistent under the null hypothesis. We propose tests for this crucial restriction that are based on the entire conditional quantile regression process after correcting for sample selection bias. Monte Carlo simulations demonstrate that they are powerful and two empirical illustrations indicate that violations of this assumption are likely to be ubiquitous inlabor economics. Keywords: Sample selection, quantile regression, independence, test
The Evaluation of the Effect of Income on Health based on European Data by Helene Schrcksnadel( )

1 edition published in 2014 in English and held by 1 WorldCat member library worldwide

There is consensus in research that there is a strong positive relation between income and health. The present thesis examines the causality of this effect by using inheritance as an instrument for income. Self-perceived health and actual physical health are used as health indicators. The estimation method chosen is 2SLS regression. The thesis further answers the question whether this effect differs between men and women. The analysis is based on data obtained from SHARE. The results suggest that there is a statistically significant beneficial effect of income on both health indicators that does not differ significantly for men and women. The magnitude of the effect is small and thus the economic importance limited
Testing instrument validity for LATE identification based on inequality moment constraints by Martin Huber( Book )

1 edition published in 2011 in English and held by 1 WorldCat member library worldwide

This paper proposes bootstrap tests for the validity of instrumental variables (IV) in just identified treatment effect models with endogeneity. We demonstrate that the IV assumptions required for the identification of the local average treatment effect (LATE) allow us to both point identify and bound the mean potential outcomes (i) of the always takers (those treated irrespective of the instrument) under treatment and (ii) of the never takers (never treated irrespective of the instrument) under non-treatment. The point identified means must lie within their respective bounds, which provides four testable inequality moment constraints for IV validity. Furthermore, we show that a similar logic applies to testing the assumptions needed to identify distributional features (e.g., local quantile treatment effects). Finally, we discuss how testing power can be increased by imposing dominance/equality assumptions on the potential outcome distributions of different subpopulations
Identifizierung von direkten Effekten von Ausbildung auf den BMI und indirekten Effekten über das Einkommen Evidenz aus Australien by Thomas Aeschbacher( )

1 edition published in 2014 in German and held by 1 WorldCat member library worldwide

In der bisherigen Forschung wurde vor allem der Effekt einer höheren Bildung auf den BMI untersucht. Jedoch ist noch relativ unbekannt, was die zugrunde liegenden kausalen Mechanismen sind. Die vorliegende Arbeit untersucht insbesondere indirekte Effekte von Ausbildung auf den BMI über das Einkommen, wobei für die Schätzung Änderungen im Pflichtschulalter von australischen Bundesstaaten benützt werden. Dabei kann für Frauen ein nicht-monotoner indirekter Effekt des Einkommens nachgewiesen werden. So zeigt sich, dass dieser BMI-senkend für Frauen mit einem hohen Bildungsabschluss ist und BMI-erhöhend für jene mit einer niedrigen Anzahl an Ausbildungsjahren. Ebenso können für Frauen signifikante direkte Effekte von Ausbildung auf den BMI dargelegt werden. Diese sind über alle Ausbildungsstufen hinweg negativ
Testing Instrument Validity in Measuring the Private Returns to Education by Mariana Gimpelewicz( )

1 edition published in 2013 in English and held by 1 WorldCat member library worldwide

This paper aims to investigate and test the validity of three different studies that use Instrumental Variables (IV) to identify private returns to education. We use the newly developed Huber-Mellace bootstrap for testing. Our secondary aim is to evaluate the test's performance in applying it to empirical data. The first study we analyse uses changes in compulsory education laws to estimate returns to schooling in North America and Great Britain. Results suggest that cohort controls are essential when using this IV. The second paper is a twin study that implements "cross-reporting" and a "within-pair" estimators on a sample of identical female twins. The small twin dataset restricts the test's power and exogeneity cannot not be rejected; however, complier shares indicate the presence of measurement error. This raises doubt about the validity of relying on twin-pair variation for estimation. The third study uses parental education as an instrument to estimate returns to education in the US. Results cannot reject the hypothesis that family background characteristics are exogenous. For the secondary aim, we find that some limitations arise in using the test to evaluate empirical data. They mainly stem from the need to convert treatment and instrument variables into dummies and the lack of a feature to introduce controls. Despite the constraints, the Huber-Mellace test provides a direct mean to quantify an assumption which, up until now, could only be supported with intuition. This is a significant step forward in the IV validity debate
Automatised Sales Forecasting in Retail Using a Pattern Matching Algorithm Based on a Weighted Mahalanobis Distance by Tino Good( )

1 edition published in 2014 in English and held by 1 WorldCat member library worldwide

Moral hazard in labor markets - Evidence from the NBA for the implications of fixed, long-term contracts on productivity by Michael Schner( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

Common opinion presumes that employees vary their effort throughout a fixed, multi-period contract and reduce the shirking behavior not until their contract draws to a close. Especially in sports environments, several authors analyzed this type of moral hazard with diverging results. We attempt to contribute to the existing body of literature and hence test for the presence and extent of shirking in professional basketball. We elaborate on the theoretical background of moral hazard in a principal-agent environment and contractual mechanisms relative to that and then demonstrate why the NBA promises to be a suitable testing ground for the analysis of shirking behavior. After setting up an unbalanced panel with 1331 observations of 373 individuals, we apply a fixed effects estimation. We come to the conclusion that professional basketball players do indeed vary their effort throughout the course of a fixed contract: a one-year increase in the contract length left leads to a statistically significant drop in performance by approximately 1.8%. However, shirking does not seem to be present at the beginning of a player's career
Therapiehandbuch Botulinumtoxin und Spastik( Book )

1 edition published in 2015 in German and held by 1 WorldCat member library worldwide

Berufsbedingte Mobilität in der Schweiz eine empirische Analyse by Alexandra Exner( )

1 edition published in 2014 in German and held by 1 WorldCat member library worldwide

Die vorliegende Arbeit untersucht den Effekt soziodemographischer Faktoren auf die berufsbedingte Mobilität (Berufspendeln) in der Schweiz. Mittels der Methode der kleinsten Quadrate (OLS) und einer multinomialen logistischen Regression werden die Effekte geschätzt. Gesamthaft sprechen die Ergebnisse dafür, dass die individuelle Mobilitätsentscheidung eng mit der Lebensphase und soziodemographischen Merkmalen verknüpft ist. Es zeigt sich, dass insbesondere die Geburt von Kindern einen Wendepunkt im Mobilitätsverhalten darstellt. Jüngere Personen mit weniger festen Bindungen sind flexibler in ihrer Mobilität als Familien mit Kindern, wobei Männer mit der Geburt von Kindern weniger stark in ihrem Mobilitätsverhalten eingeschränkt werden als Frauen. Die Ergebnisse sprechen dafür, dass das Mobilitäts- bzw. Pendelverhalten eher auf eine kollektive Haushaltsentscheidung als auf eine ausschliesslich individuelle Entscheidung zurückzuführen ist
Fusschirurgie in der Praxis by Rainer-Peter Meyer( Book )

1 edition published in 2013 in German and held by 1 WorldCat member library worldwide

Authentische Fallbeispiele und instruktive Bildserien zum Verlauf demonstrieren die operativen und konservativen Therapieverfahren zur Behandlung der Erkrankungen und Deformitäten der Füe. Die 2. Auflage wurde um einige zusätzliche Kapitel ergänzt: - arthroskopisch assistierte Arthrodese des oberen Sprunggelenkes - Arthroplastik des oberen Sprunggelenkes - Hallux valgus - Analyse und Evaluation der möglichen Operationsverfahren - Operationen nach Scarf, Scarf-Akin und Lapidus sowie Magerl-Osteotomie zur Korrektur des Hallux valgus - Korrekturmöglichkeiten für die Kleinzehen - Osteotomien an den kleinen Mittelfuknochen Kompetent, übersichtlich, praxisnah - ein Buch für jeden Orthopäden und Unfallchirurgen!
How to Control for Many Covariates? Reliable Estimators Based on the Propensity Score by Martin Huber( )

1 edition published in 2010 in English and held by 1 WorldCat member library worldwide

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 observable 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 evaluation of labour market programmes in Germany. We vary several dimensions of the design that are of practical importance, like sample size, the type of the outcome variable, and aspects of the selection process. We find that trimming individual observations with too much weight as well as the choice of tuning parameters is important for all estimators. The key conclusion from our simulations is that a particular radius matching estimator combined with regression performs best overall, in particular when robustness to misspecifications of the propensity score is considered an important property. -- propensity score matching ; kernel matching ; inverse probability weighting ; selection on observables ; empirical Monte Carlo study ; finite sample properties
Der Einfluss soziodemographischer Faktoren auf das Einkommen in der Ukraine eine empirische Analyse by Alexandra Exner( )

1 edition published in 2012 in German and held by 0 WorldCat member libraries worldwide

Die vorliegende Arbeit untersucht den Effekt soziodemographischer Faktoren auf das Einkommen in der Ukraine in den Jahren 1992/93 und 1996. Mittels der Methode der kleinsten Quadrate (OLS) wird eine Einkommensfunktion in Anlehnung an Jabob Mincer geschätzt. Für 1993 zeigt sich ein signifikanter Einfluss des Geschlechts, des Universitätsabschlusses sowie der Sprache auf die Lohnhöhe. Ein Mann verdient monatlich durchschnittlich rund 60% mehr als eine Frau, ein Universitätsabschluss erhöht den Lohn im Vergleich zu keinem Schulabschluss um 37% und die ukrainische Muttersprache hat einen negativen Einfluss von 12% auf das Monatseinkommen. Demgegenüber haben 1996 neben dem Geschlecht die verschiedenen Bildungsabschlüsse sowie die Arbeitserfahrung einen positiven Einfluss auf die Einkommenshöhe und die Sprache erweist sich als insignifikant. Die Löhne von Männern und Frauen gleichen sich an. Je höher der erreichte Bildungsabschluss einer Person, desto höher ist das Einkommen im Vergleich zu einer Person, die keinen Schulabschluss erworben hat. Die Arbeitserfahrung hat einen positiven Lohneffekt von 3% für das erste Jahr Arbeitserfahrung. Der positive Effekt bleibt bis zu 23 Jahren Arbeitserfahrung erhalten, verringert sich jedoch mit jedem zusätzlichem Jahr aufgrund des abnehmenden Grenznutzens der Arbeitserfahrung. Gesamthaft sprechen diese Ergebnisse für eine fortschreitende Transformation vom Kommunismus hin zu marktwirtschaftlichen Strukturen
Chancen und Probleme von Subunternehmern by Martin Huber( )

1 edition published in 2001 in German and held by 0 WorldCat member libraries worldwide

Direct and indirect effects of training vouchers for the unemployed by Martin Huber( Book )

2 editions published in 2015 in English and held by 0 WorldCat member libraries worldwide

This paper evaluates the effect of a voucher award system for assignment into vocational training on the employment outcomes of unemployed voucher recipients in Germany, along with the causal mechanisms through which it operates. It assesses the direct effect of voucher assignment net of actual redemption, which may be driven by preference shaping/learning about (possibilities of) human capital investments or simply by costs of information gathering. Using a mediation analysis framework based on sequential conditional independence assumptions and semiparametric matching estimators, our results suggest that the negative short term and positive long term employment effects of voucher award are mainly driven by actual training participation. However, also the direct effect of just obtaining the voucher is negative in the short run. This points to potential efficiency losses of voucher award systems if individuals decide not to redeem, as employment chances are lower than under non-award in the short run and under redemption in the long run, making non-redemption the least attractive option
The finite sample performance of semi- and nonparametric estimators for treatment effects and policy evaluation by Markus Frlich( )

1 edition published in 2015 in English and held by 0 WorldCat member libraries worldwide

"This paper investigates the finite sample performance of a comprehensive set of semi- and nonparametric estimators for treatment and policy evaluation. In contrast to previous simulation studies which mostly considered semiparametric approaches relying on parametric propensity score estimation, we also consider more flexible approaches based on semi- or nonparametric propensity scores, nonparametric regression, and direct covariate matching. In addition to (pair, radius, and kernel) matching, inverse probability weighting, regression, and doubly robust estimation, our studies also cover recently proposed estimators such as genetic matching, entropy balancing, and empirical likelihood estimation. We vary a range of features (sample size, selection into treatment, effect heterogeneity, and correct/misspecification) in our simulations and find that several nonparametric estimators by and large outperform commonly used treatment estimators using a parametric propensity score. Nonparametric regression, nonparametric doubly robust estimation, nonparametric IPW, and one-to-many covariate matching perform best."--Author abstract
Microeconometric Estimators and Tests based on Nonparametric Methods, Quantile Regression, and Resampling by Martin Huber( )

1 edition published in 2010 in English and held by 0 WorldCat member libraries worldwide

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Alternative Names
Huber, M. 1980-

English (39)

German (6)