Evaluation of Subsidy Programmes

This research group develops the scientific foundations for causal impact analysis of policy interventions within the European Union, with a particular focus on place-based policies. Despite significant public spending on such programmes in many developed economies, there is limited evidence on their effectiveness and efficiency.

Our approach integrates three key dimensions: first, the systematic use of administrative funding data and legislative documents; second, the application of advanced methods in policy impact evaluation; and third, the exchange of knowledge among researchers, policymakers, public administration, and civil society. Without this integration, research risks becoming either overly abstract or disconnected from the institutional and legal realities of policy implementation. By combining these elements, we create robust research designs grounded in real data and legal frameworks.

This approach allows us to generate evidence-based insights that contribute to better informed decision-making—not only in politics but also within civil society. The findings of our work have contributed to the revision and improvement of existing subsidy programmes. The research group is closely embedded in the activities of the Centre for Evidence-based Policy Advice (CEP), ensuring both scientific rigor and practical relevance. In doing so, we embody the leitmotif of the Leibniz Association: theoria cum praxi.

Research Cluster
Economic Dynamics and Stability

Your contact

PD Dr Mirko Titze
PD Dr Mirko Titze
- Department Centre for Evidence-based Policy Advice
Send Message +49 345 7753-861

EXTERNAL FUNDING

09.2019 ‐ 09.2022

Establishing Evidence-based Evaluation Methods for Subsidy Programmes in Germany (EVA-KULT)

The project aims at expanding the Centre for Evidence-based Policy Advice at the Halle Institute for Economic Research (IWH-CEP).

see project's webpage

PD Dr Mirko Titze

01.2018 ‐ 12.2020

Networked growth - Innovative Saxony-Anhalt through digital business models (Competence Center 4.0)

PD Dr Mirko Titze

01.2017 ‐ 12.2018

Political Participation in Eastern Germany

Dr Matthias Brachert

12.2015 ‐ 11.2018

Socio-economic Effects of Research on Innovative Approaches for POC Diagnostics

Part of the EXASENS project. Coordinated by the Leibniz Institute of Photonic Technology (IPHT) in Jena, nine Leibniz institutes are working together on researching point-of-care (POC) technology for the prediction and diagnosis of chronic inflammatory respiratory diseases. See press release.

Dr Matthias Brachert

02.2017 ‐ 02.2018

The Importance of Non-University Research Institutions for the Development of Firms and Regions (Be_For_Reg-Projekt)

PD Dr Mirko Titze

01.2015 ‐ 12.2016

Evaluation of the "Joint Task 'Improving the Regional Economic Structure'" in the Federal State of Saxony-Anhalt

PD Dr Mirko Titze

Refereed Publications

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A Professor Like Me: The Influence of Instructor Gender on College Achievement

Florian Hoffmann Philip Oreopoulos

in: Journal of Human Resources, No. 2, 2009

Abstract

Many wonder whether teacher gender plays an important role in higher education by influencing student achievement and subject interest. The data used in this paper help identify average effects from male and female college students assigned to male or female teachers. We find instructor gender plays only a minor role in determining college student achievement. Nevertheless, the small effects provide evidence that gender role models matter to some college students. A same-sex instructor increases average grade performance by at most 5 percent of its standard deviation and decreases the likelihood of dropping a class by 1.2 percentage points.

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Soll die Höhe von Investitionszuschüssen an die Einführung von Umweltmanagementsystemen gekoppelt werden?

Mirko Titze

in: List Forum für Wirtschafts- und Finanzpolitik, No. 1, 2009

Abstract

In jeder arbeitsteiligen Gesellschaft ist Wirtschaftspolitik erforderlich. Im Rahmen der Wirtschaftspolitik wird versucht, ein komplexes Geflecht von Zielen zu erreichen. Es kann auch vorkommen, dass mit dem Erreichen eines Ziels ein anderes geschwächt wird. Dies ist Gegenstand des vorliegenden Beitrags. Konkret geht es um das Ziel Verbesserung der Wirtschaftsstruktur und das Umweltziel. Das Strukturziel wird in der Bundesrepublik Deutschland unter anderem über die Investitionszuschüsse im Rahmen der Gemeinschaftsaufgabe ‚Verbesserung der regionalen Wirtschaftsstruktur‘ verfolgt, die über die Länder ausgereicht werden. Einige Länder sind dazu übergegangen, die Gewährung von Investitionszuschüssen an Sekundärziele, zum Beispiel auch den Umweltschutz, zu knüpfen. Der vorliegende Beitrag beschreibt einen aktuellen Fall aus dem politischen Diskussionsprozess, in dem die Höhe des Fördersatzes an die Einführung von so genannten Umweltmanagementsystemen gebunden wird. Der Beitrag zeigt, dass unter bestimmten Konstellationen die Investitionstätigkeit gebremst wird und gleichzeitig Umweltmanagementsysteme nicht eingeführt werden. Damit hätte man beide Ziele nicht erreicht. Der bessere Weg bestünde in der direkten Unterstützung von Unternehmen, bei denen ein Umweltmanagementsystem sinnvoll ist, wie es bereits durch Programme auf Landesebene praktiziert wird.

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Professor Qualities and Student Achievement

Florian Hoffmann Philip Oreopoulos

in: Review of Economics and Statistics, No. 1, 2009

Abstract

This paper analyzes the importance of teacher quality at the college level. Instructors are matched to objective and subjective characteristics of teacher quality to estimate the impact of rank, salary, and perceived effectiveness on student performance and subject interest. Student and course fixed effects, time of day and week controls, and students' lack of knowledge about first-year instructors help minimize selection biases. Subjective teacher evaluations perform well in measuring instructor influences on students, while objective characteristics such as rank and salary do not. Overall, the importance of college instructor differences is small, but important outliers exist.

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Working Papers

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Investment Grants: Curse or Blessing for Employment?

Eva Dettmann

in: IWH Discussion Papers, No. 12, 2025

Abstract

<p>In this study, establishment-level employment effects of investment grants in Germany are estimated. In addition to the quantitative effects, I provide empirical evidence of funding effects on different aspects of employment quality (earnings, qualifications, and job security) for the period 2004 to 2020. The database combines project-level treatment data, establishment-level information on firm characteristics and employee structure, and regional information at the district-level. For the estimations, I combine the difference-in-differences approach of Callaway and Sant’Anna (2021) with ties matching at the cohort level. The estimations yield positive effects on the number of employees, but point to contradicting effects of investment grants on different aspects of employment quality.</p>

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Who Benefits from Place-based Policies? Evidence from Matched Employer-Employee Data

Philipp Grunau Florian Hoffmann Thomas Lemieux Mirko Titze

in: IWH Discussion Papers, No. 11, 2024

Abstract

<p>We study the granular wage and employment effects of a German place-based policy using a research design that leverages conditionally exogenous EU-wide rules governing program parameters at the regional level. The place-based program subsidizes investments to create jobs with a subsidy rate that varies across labor market regions. The analysis uses matched data on the universe of establishments and their employees, establishment-level panel data on program participation, and regional scores that generate spatial discontinuities in program eligibility and generosity. Spatial spillovers of the program linked to changing commuting patterns can be assessed using information on place of work and place of residence, a unique feature of the data. These rich data enable us to study the incidence of the place-based program on different groups of individuals. We find that the program helps establishments create jobs that disproportionately benefit younger and less-educated workers. Funded establishments increase their wages but, unlike employment, wage gains do not persist in the long run. Employment effects estimated at the local area level are slightly larger than establishment- level estimates, suggesting limited economic spillover effects. On the other hand, spatial spillovers are large as over half of the employment increase comes from commuters. Using subsidy rates as an instrumental variable for actual subsidies indicates that it costs approximately EUR 25,000 to create a new job in the economically disadvantaged areas targeted by the program.</p>

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Employment Effects of Investment Grants and Firm Heterogeneity – Evidence from a Staggered Adoption Approach

Eva Dettmann Mirko Titze Antje Weyh

in: IWH Discussion Papers, No. 6, 2023

Abstract

<p>This study estimates the firm-level employment effects of investment grants in Germany. In addition to the average treatment effect on the treated, we examine discrimination in the funding rules as potential source of effect heterogeneity. We combine a staggered difference-in-differences approach that explicitly models variations in treatment timing with a matching procedure at the cohort level. The findings reveal a positive effect of investment grants on employment development in the full sample. The subsample analysis yields strong evidence for heterogeneous effects based on firm characteristics and the economic environment. This can help to improve the future design of the program.</p>

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flexpaneldid: A Stata Toolbox for Causal Analysis with Varying Treatment Time and Duration

Eva Dettmann Alexander Giebler Antje Weyh

in: IWH Discussion Papers, No. 3, 2020

Abstract

The paper presents a modification of the matching and difference-in-differences approach of Heckman et al. (1998) for the staggered treatment adoption design and a Stata tool that implements the approach. This flexible conditional difference-in-differences approach is particularly useful for causal analysis of treatments with varying start dates and varying treatment durations. Introducing more flexibility enables the user to consider individual treatment periods for the treated observations and thus circumventing problems arising in canonical difference-in-differences approaches. The open-source flexpaneldid toolbox for Stata implements the developed approach and allows comprehensive robustness checks and quality tests. The core of the paper gives comprehensive examples to explain the use of the commands and its options on the basis of a publicly accessible data set.

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Who Benefits from GRW? Heterogeneous Employment Effects of Investment Subsidies in Saxony Anhalt

Eva Dettmann Mirko Titze Antje Weyh

in: IWH Discussion Papers, No. 27, 2017

Abstract

The paper estimates the plant level employment effects of investment subsidies in one of the most strongly subsidized German Federal States. We analyze the treated plants as a whole, as well as the influence of heterogeneity in plant characteristics and the economic environment. Modifying the standard matching and difference-in-difference approach, we develop a new procedure that is particularly useful for the evaluation of funding programs with individual treatment phases within the funding period. Our data base combines treatment, employment and regional information from different sources. So, we can relate the absolute effects to the amount of the subsidy paid. The results suggest that investment subsidies have a positive influence on the employment development in absolute and standardized figures – with considerable effect heterogeneity.

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