Markus Frölich

Addresses for correspondence (2009)

Markus Frölich, Michael Lechner, Markus Frölich, Michael Lechner

058311 and 4045-050673) and the Grundlagenforschungsfonds HSG (project G02110112) is gratefully acknowledged. Part of the data originated from a database generated for the evaluation of the Swiss...

A Caseworker Like Me: Does the Similarity between Unemployed and Caseworker Increase Job Placements? (2008)

Behncke, Stefanie, Frölich, Markus, Lechner, Michael

This paper examines whether the chances of job placements improve if unemployed persons are counselled by caseworkers who belong to the same social group, defined by gender, age, education, and...

Teacher Shortages, Teacher Contracts and their Impacton Education in Africa (2007)

Bourdon, Jean, Frölich, Markus, Michaelowa, Katharina

Primary school enrolment rates are very low in francophone Africa. In order to enhance education supply, many countries have launched large teacher recruitment programmes in recent years, whereby...

Teacher Shortages, Teacher Contracts and their Impacton Education in Africa (2007)

Bourdon, Jean, Frölich, Markus, Michaelowa, Katharina

Primary school enrolment rates are very low in francophone Africa. In order to enhance education supply, many countries have launched large teacher recruitment programmes in recent years, whereby...

Broadening Access to Primary Education: Contract Teacher Programs and Their Impact on Education Outcomes in Africa – An Econometric Evaluation for Niger (2006)

Bourdon, Jean, Frölich, Markus, Michaelowa, Katharina

For Sub-Saharan Africa as a whole, but particularly for countries in the Sahel zone, full primary enrolment and completion at acceptable quality as codified in the Millennium Development Goals and...

Broadening Access to Primary Education: Contract Teacher Programs and Their Impact on Education Outcomes in Africa – An Econometric Evaluation for Niger (2006)

Bourdon, Jean, Frölich, Markus, Michaelowa, Katharina

For Sub-Saharan Africa as a whole, but particularly for countries in the Sahel zone, full primary enrolment and completion at acceptable quality as codified in the Millennium Development Goals and...

Broadening Access to Primary Education: Contract Teacher Programs and Their Impact on Education Outcomes in Africa – An Econometric Evaluation for Niger (2006)

Bourdon, Jean, Frölich, Markus, Michaelowa, Katharina

For Sub-Saharan Africa as a whole, but particularly for countries in the Sahel zone, full primary enrolment and completion at acceptable quality as codified in the Millennium Development Goals and...

Immigration and Heterogeneous Labor in Western Germany : A Labor Market Classification Based on Nonparametric Estimation (2004)

Frölich, Markus, Puhani, Patrick A.

This paper presents a methodology to identify net demand shocks as well as wage rigidities in heterogeneous labor markets on the basis of nonparametric regression. We show how this approach can be...

Semiparametric Estimation of Selectivity Models. (1999)

Frölich, Markus

This paper provides a comprehensive summary of the most promising estimation methods for the(dichotomous) selectivity models. Selectivity models, often referred to as sample selection models,...

Semiparametric Estimation of Selectivity Models. (1998)

Frölich, Markus

This paper provides a comprehensive summary of the most promising estimation methods for the (dichotomous) selectivity models. Selectivity models, often referred to as sample selection models, are...

Statistical Assistance for Programme Selection - For a Better Targeting of Active Labour Market Policies in Switzerland

Stefanie Behncke, Markus Frölich, Michael Lechner

In this paper the motivation and various concepts of statistical systems for assisting case workers in assigning unemployed persons to active labour market programmes (ALMP) are examined and the...

Exploiting regional treatment intensity for the evaluation of labour market policies

Markus Frölich, Michael Lechner

We estimate the effects of active labour market policies (ALMP) on subsequent employment by nonparametric instrumental variables and matching estimators. Very informative administrative Swiss data...

A Note on Parametric and Nonparametric Regression in the Presence of Endogenous Control Variables

Markus Frölich

This note argues that nonparametric regression not only relaxes functional form assumptions vis-a-vis parametric regression, but that it also permits endogenous control variables. To control for...

Exploiting regional treatment intensity for the evaluation of labour market policies

Markus Frölich, Michael Lechner

We estimate the effects of active labour market policies (ALMP) on subsequent employment by nonparametric instrumental variables and matching estimators. Very informative administrative Swiss data...

Exploiting Regional Treatment Intensity for the Evaluation of Labour Market Policies

Markus Frölich, Michael Lechner

We estimate the effects of active labour market policies (ALMP) on subsequent employment by nonparametric instrumental variables and matching estimators. Very informative administrative Swiss data...

Statistical treatment choice: an application to active labour market programmes

Markus Frölich

Choosing among a number of available treatments the most suitable for a given subject is an issue of everyday concern. A physician has to choose an appropriate drug treatment or medical treatment for...

A microeconometric evaluation of rehabilitation of long-term sickness in Sweden

Markus Frölich, Almas Heshmati, Michael Lechner

In this study the effects of various types of rehabilitation programmes on labour market outcomes are estimated. A main feature of this study is that it jointly evaluates multiple treatments by...

Teacher Shortages, Teacher Contracts and their Impact on Education in Africa

Jean Bourdon, Markus Frölich, Katharina Michaelowa

Primary school enrolment rates are very low in francophone Africa. In order to enhance education supply, many countries have launched large teacher recruitment programmes in recent years, whereby...

Propensity score matching without conditional independence assumption--with an application to the gender wage gap in the United Kingdom

Markus Frölich

Propensity score matching is frequently used for estimating average treatment effects. Its applicability, however, is not confined to treatment evaluation. In this paper, it is shown that propensity...

On the inefficiency of propensity score matching

Markus Frölich

Propensity score matching, Average treatment effect, Efficiency ,

Unemployed and Their Caseworkers: Should They Be Friends or Foes?

Behncke, Stefanie, Frölich, Markus, Lechner, Michael

In many countries, caseworkers in a public employment office have the dual roles of counselling and monitoring unemployed persons. These roles often conflict with each other leading to important...

Unemployed and Their Caseworkers: Should They Be Friends or Foes?

Stefanie Behncke, Markus Frölich, Michael Lechner

In many countries, caseworkers in a public employment office have the dual roles of counselling and monitoring unemployed persons. These roles often conflict with each other leading to important...

Nonparametric IV Estimation of Local Average Treatment Effects with Covariates

Frölich, Markus

In this paper nonparametric instrumental variable estimation of local average treatment effects (LATE) is extended to incorporate confounding covariates. Estimation of local average treatment effects...

Regional Treatment Intensity as an Instrument for the Evaluation of Labour Market Policies

Frölich, Markus, Lechner, Michael

The effects of active labour market policies (ALMP) on individual employment chances and earnings are evaluated by nonparametric instrumental variables based on Swiss administrative data with...

A Note on Parametric and Nonparametric Regression in the Presence of Endogenous Control Variables

Markus Frölich

This note argues that nonparametric regression not only relaxes functional form assumptions vis-a-vis parametric regression, but that it also permits endogenous control variables. To control for...

Statistical Treatment Choice: An Application to Active Labour Market Programmes

Markus Frölich

Choosing among a number of available treatments the most suitable for a given subject is an issue of everyday concern. A physician has to choose an appropriate drug treatment or medical treatment for...

Non-parametric regression for binary dependent variables

Markus Frölich

Finite-sample properties of non-parametric regression for binary dependent variables are analyzed. Non parametric regression is generally considered as highly variable in small samples when the...

A Caseworker Like Me - Does the Similarity between unemployed and Caseworker Increase Job Placements?

Behncke, Stefanie, Frölich, Markus, Lechner, Michael

This paper examines whether the chances of job placements improve if unemployed persons are counselled by caseworkers who belong to the same social group, defined by gender, age, education, and...

Public Employment Services and Employers: How Important are Networks with Firms?

Stefanie Behncke, Markus Frölich, Michael Lechner

This paper examines whether contacts between caseworkers in public employment offices and employers impact on the reemployment chances of the unemployed they counsel. This analysis is made possible...

Targeting Labour Market Programmes - Results from a Randomized Experiment

Stefanie Behncke, Markus Frölich, Michael Lechner

We evaluate a randomized experiment of a statistical support system developed to assist caseworkers in Swiss employment offices in choosing appropriate active labour market programmes for their...

Targeting Labour Market Programmes: Results from a Randomized Experiment

Stefanie Behncke, Markus Frölich, Michael Lechner

We evaluate a randomized experiment of a statistical support system developed to assist caseworkers in Swiss employment offices in choosing appropriate active labour market programmes for their...

Unconditional quantile treatment effects under endogeneity

Markus Frölich, Blaise Melly

This paper develops IV estimators for unconditional quantile treatment effects (QTE) when the treatment selection is endogenous. In contrast to conditional QTE, i.e. the effects conditional on a...

Targeting Labour Market Programmes - Results from A Randomised Experiment

Behncke, Stefanie, Frölich, Markus, Lechner, Michael

We evaluate a randomized experiment of a statistical support system developed to assist caseworkers in Swiss employment offices in choosing appropriate active labour market programmes for their...

Unconditional Quantile Treatment Effects under Endogeneity

Frölich, Markus, Melly, Blaise

This paper develops IV estimators for unconditional quantile treatment effects (QTE) when the treatment selection is endogenous. In contrast to conditional QTE, i.e. the effects conditional on a...

Regression discontinuity design with covariates

Markus Frölich

In this paper, the regression discontinuity design (RDD) is generalized to account for differences in observed covariates X in a fully nonparametric way. It is shown that the treatment effect can be...

Regression discontinuity design with covariates

Markus Frölich

In this paper, the regression discontinuity design (RDD) is generalized to account for differences in observed covariates X in a fully nonparametric way. It is shown that the treatment effect can be...

Public Employment Services and Employers: How Important are Networks with Firms?

Stefanie Behncke, Markus Frölich, Michael Lechner

This paper examines whether contacts between caseworkers in public employment offices and employers impact on the reemployment chances of the unemployed they counsel. This analysis is made possible...

Aktive Arbeitsmarktpolitik in Deutschland und der Schweiz : eine Gegenüberstellung

Stefanie Behncke, Markus Frölich, Michael Lechner

Aktive Arbeitsmarktpolitik in der Schweiz wird der deutschen gegenübergestellt. Beide Länder haben viele Gemeinsamkeiten bezüglich Zielsetzung, Instrumenten und institutionellen Reformen von...

Regression Discontinuity Design with Covariates

Markus Frölich

In this paper, the regression discontinuity design (RDD) is generalized to account for differences in observed covariates X in a fully nonparametric way. It is shown that the treatment effect can be...

A Caseworker Like Me: Does the Similarity between Unemployed and Caseworker Increase Job Placements?

Behncke, Stefanie, Frölich, Markus, Lechner, Michael

This paper examines whether the chances of job placements improve if unemployed persons are counselled by caseworkers who belong to the same social group, defined by gender, age, education, and...

A Caseworker Like Me - Does The Similarity Between Unemployed And Caseworker Increase Job Placements?

Stefanie Behncke, Markus Frölich, Michael Lechner

This paper examines whether the chances of job placements improve if unemployed persons are counselled by caseworkers who belong to the same social group, defined by gender, age, education, and...

Immigration and Heterogeneous Labor in Western Germany A Labor Market Classification Based on Nonparametric Estimation

Frölich, Markus, Puhani, Patrick A.

This paper presents a methodology to identify net demand shocks as well as wage rigidities in heterogeneous labor markets on the basis of nonparametric regression. We show how this approach can be...

Programme Evaluation with Multiple Treatments

Frölich, Markus

This paper reviews the main identification and estimation strategies for microeconomic policy evaluation. Particular emphasis is laid on evaluating policies consisting of multiple programmes, which...

What is the Value of Knowing the Propensity Score for Estimating Average Treatment Effects?

Frölich, Markus

Propensity score matching is widely used in treatment evaluation to estimate average treatment effects. Nevertheless, the role of the propensity score is still controversial. Since the propensity...

Peer Effects and Textbooks in Primary Education: Evidence from Francophone Sub-Saharan Africa

Frölich, Markus, Michaelowa, Katharina

As opposed to many other school inputs, textbooks have frequently been demonstrated to significantly foster student achievement. Using the rich data set provided by the 'Program on the Analysis of...

Aktive Arbeitsmarktpolitik in Deutschland und der Schweiz - eine Gegenüberstellung

Stefanie Behncke, Markus Frölich, Michael Lechner

The active labour market policies in Switzerland and Germany are compared. German and Swiss labour market policies have similar aims, instruments and experienced similar institutional reforms. In...

Statistical Treatment Choice: An Application to Active Labour Market Programmes

Markus Frölich

Choosing among a number of available treatments the most suitable for a given subject is an issue of everyday concern. A physician has to choose an appropriate drug treatment or medical treatment for...

A Microeconometric Evaluation of Rehabilitation of Long-term Sickness in Sweden

Frölich, Markus, Heshmati, Almas, Lechner, Michael

In this study the effects of various types of rehabilitation programmes on different labour market and health related outcomes are estimated. The main feature of this study, compared to previous...

Statistically assisted programme selection - International experiences and potential benefits for Switzerland

Frölich, Markus, Lechner, Michael, Steiger, Heidi

The need for better targeting of active labour market programmes is evident from the many evaluation studies that find insignificant or even negative effects. A statistical system could contribute to...

A Note on the Role of the Propensity Score for Estimating Average Treatment Effects

Markus Frölich

Hahn [Hahn, J. (1998). On the role of the propensity score in efficient semiparametric estimation of average treatment effects. Econometrica 66:315--331] derived the semiparametric efficiency bounds...

Finite-Sample Properties of Propensity-Score Matching and Weighting Estimators

Markus Frölich

The finite-sample properties of matching and weighting estimators, often used for estimating average treatment effects, are analyzed. Potential and feasible precision gains relative to pair matching...

Immigration and Heterogeneous Labor in Western Germany : A Labor Market Classification Based on Nonparametric Estimation

Frölich, Markus, Puhani, Patrick A.

This paper presents a methodology to identify net demand shocks as well as wage rigidities in heterogeneous labor markets on the basis of nonparametric regression. We show how this approach can be...

Mikroökonometrische Evaluierung berufsbezogener Rehabilitation in Schweden

Markus Frölich, Almas Heshmati, Michael Lechner

In this evaluation study the causal effects of different rehabilitation programmes on labour market outcomes are estimated simultaneously. A nonparametric matching estimator for the evaluation of...

Quantile Treatment Effects in the Regression Discontinuity Design

Frölich, Markus, Melly, Blaise

This paper shows nonparametric identification of quantile treatment effects (QTE) in the regression discontinuity design (RDD) and proposes simple estimators. Quantile treatment effects are a very...

Parametric and Nonparametric Regression in the Presence of Endogenous Control Variables

Markus Frölich

The aim of this paper is to convey to a wider audience of applied statisticians that "nonparametric" (matching) estimation methods can be a very convenient tool to overcome problems with "endogenous"...

Identification of Treatment Effects on the Treated with One-Sided Non-Compliance

Frölich, Markus, Melly, Blaise

Traditional instrumental variable estimators do not generally estimate effects for the treated population but for the unobserved population of compliers. They do identify effects for the treated when...

Statistically Assisted Programme Selection - International Experiences and Potential Benefits for Switzerland

Markus Frölich, Michael Lechner, Heidi Steiger

The need for better targeting of active labour market programmes is evident from the many evaluation studies that find insignificant or even negative effects. A statistical system could contribute to...

Broadening Access to Primary Education: Contract Teacher Programs and Their Impact on Education Outcomes in Africa – An Econometric Evaluation for Niger

Jean Bourdon, Markus Frölich, Katharina Michaelowa

For Sub-Saharan Africa as a whole, but particularly for countries in the Sahel zone, full primary enrolment and completion at acceptable quality as codified in the Millennium Development Goals and...

Teacher Shortages, Teacher Contracts and their Impacton Education in Africa

Jean Bourdon, Markus Frölich, Katharina Michaelowa

Primary school enrolment rates are very low in francophone Africa. In order to enhance education supply, manycountries have launched large teacher recruitment programmes in recent years, whereby...

Broadening Access to Primary Education: Contract Teacher Programs and Their Impact on Education Outcomes in Africa – An Econometric Evaluation for Niger

Jean Bourdon, Markus Frölich, Katharina Michaelowa

For Sub-Saharan Africa as a whole, but particularly for countries in the Sahel zone, full primary enrolment and completion at acceptable quality as codified in the Millennium Development Goals and...

Teacher Shortages, Teacher Contracts and their Impacton Education in Africa

Jean Bourdon, Markus Frölich, Katharina Michaelowa

Primary school enrolment rates are very low in francophone Africa. In order to enhance education supply, manycountries have launched large teacher recruitment programmes in recent years, whereby...

Statistical Assistance for Programme Selection - For a Better Targeting of Active Labour Market Policies in Switzerland

Stefanie Behncke, Markus Frölich, Michael Lechner

Arbeitsmarktpolitik, Statistisches Auswahlverfahren, Schweiz, Labour market policy, Sample selection, Switzerland

Targeting Labour Market Programmes - Results from a Randomized Experiment

Michael Lechner, Stefanie Behncke, Markus Frölich

We evaluate a randomized experiment of a statistical support system developed to assist caseworkers in Swiss employment offices in choosing appropriate active labour market programmes for their...