Dmitri Bershadskyy

Dmitri Bershadskyy
Current Position

since 11/18

Assistant to the Vice President

Halle Institute for Economic Research (IWH) – Member of the Leibniz Association

since 11/14

Economist in the Department of Macroeconomics

Halle Institute for Economic Research (IWH) – Member of the Leibniz Association

Research Interests

  • mechanism design
  • experimental economics
  • individual and collective decision making

Dmitri Bershadskyy joined the Department of Macroeconomics as a doctoral student in November 2014. He is also the assistant to the Vice President. His research focuses on mechanism design and decision making.

Dmitri Bershadskyy received his bachelor's and master's degree from Otto von Guericke University Magdeburg.

Your contact

Dmitri Bershadskyy
Dmitri Bershadskyy
Mitglied - Department Macroeconomics
Send Message +49 345 7753-863

Publications

Recent Publications

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Predicting Free-riding in a Public Goods Game – Analysis of Content and Dynamic Facial Expressions in Face-to-Face Communication

Dmitri Bershadskyy Ehsan Othman Frerk Saxen

in: IWH Discussion Papers, No. 9, 2019

Abstract

This paper illustrates how audio-visual data from pre-play face-to-face communication can be used to identify groups which contain free-riders in a public goods experiment. It focuses on two channels over which face-to-face communication influences contributions to a public good. Firstly, the contents of the face-to-face communication are investigated by categorising specific strategic information and using simple meta-data. Secondly, a machine-learning approach to analyse facial expressions of the subjects during their communications is implemented. These approaches constitute the first of their kind, analysing content and facial expressions in face-to-face communication aiming to predict the behaviour of the subjects in a public goods game. The analysis shows that verbally mentioning to fully contribute to the public good until the very end and communicating through facial clues reduce the commonly observed end-game behaviour. The length of the face-to-face communication quantified in number of words is further a good measure to predict cooperation behaviour towards the end of the game. The obtained findings provide first insights how a priori available information can be utilised to predict free-riding behaviour in public goods games.

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Die Mär vom egoistischen Ökonomen – Wie Ökonomen auf Anreize reagieren

Dmitri Bershadskyy

in: Wirtschaft im Wandel, No. 1, 2018

Abstract

Menschen, die über ökonomische Bildung verfügen, reagieren stärker auf wirtschaftliche Anreize. Entgegen der verbreiteten Annahme handeln Ökonomen jedoch nicht egoistischer als Nicht-Ökonomen, wenn es darum geht, gemeinsam ein öffentliches Gut zu finanzieren. Mit Hilfe eines Experiments, in dem die Teilnehmer echtes Geld gewinnen konnten, wird gezeigt, dass Ökonomen sich stärker an den vorliegenden Anreizstrukturen orientieren. Auf der einen Seite tragen Ökonomen am Anfang leicht höher zu dem öffentlichen Gut bei und fangen signifikant später an, von der sozial optimalen Strategie abzuweichen. Auf der anderen Seite leisten Ökonomen zum Ende des Experiments, wenn Trittbrettfahrerverhalten weniger Konsequenzen hat, deutlich geringere Beiträge als Nicht-Ökonomen. Im zweiten Teil des Experiments wird den Teilnehmenden die Möglichkeit gegeben, in eine Erleichterung der kooperativen Finanzierung des öffentlichen Guts zu investieren, wobei zwischen einem investitionsfreundlichen (Geld-zurück-Garantie) und einem weniger investitionsfreundlichen Szenario (keine Garantie) unterschieden wird. Das Experiment zeigt, dass die Probanden mit ökonomischer Ausbildung auf diesen kleinen Unterschied in den Anreizstrukturen stärker reagieren.

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Endogenous Institution Formation in Public Good Games: The Effect of Economic Education

Martin Altemeyer-Bartscher Dmitri Bershadskyy Philipp Schreck Florian Timme

in: IWH Discussion Papers, No. 29, 2017

Abstract

In a public good experiment, the paper analyses to which extent individuals with economic education behave differently in a second-order dilemma. Second-order dilemmas may arise, when individuals endogenously build up costly institutions that help to overcome a public good problem (first-order dilemma). The specific institution used in the experiment is a communication platform allowing for group communication before the first-order public good game takes place. The experimental results confirm the finding of the literature that economists tend to free ride more intensively in public good games than non-economists. The difference is the strongest in the end-game phase, yielding in the conclusion that the magnitude of the end-game effect depends on the share of economists in the pool of participants. When it comes to the building-up of institutions, the individual efficiency gain of the institution and its inherent cost function constitute the driving forces for the contribution behaviour. Providing an investment friendly environment yields in economists contributing more to the institution than non-economists. Therefore, we make clear that first-order results of a simple public good game cannot be simply applied for second-order incentive problems.

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Working Papers

cover_DP_2019-09.jpg

Predicting Free-riding in a Public Goods Game – Analysis of Content and Dynamic Facial Expressions in Face-to-Face Communication

Dmitri Bershadskyy Ehsan Othman Frerk Saxen

in: IWH Discussion Papers, No. 9, 2019

Abstract

This paper illustrates how audio-visual data from pre-play face-to-face communication can be used to identify groups which contain free-riders in a public goods experiment. It focuses on two channels over which face-to-face communication influences contributions to a public good. Firstly, the contents of the face-to-face communication are investigated by categorising specific strategic information and using simple meta-data. Secondly, a machine-learning approach to analyse facial expressions of the subjects during their communications is implemented. These approaches constitute the first of their kind, analysing content and facial expressions in face-to-face communication aiming to predict the behaviour of the subjects in a public goods game. The analysis shows that verbally mentioning to fully contribute to the public good until the very end and communicating through facial clues reduce the commonly observed end-game behaviour. The length of the face-to-face communication quantified in number of words is further a good measure to predict cooperation behaviour towards the end of the game. The obtained findings provide first insights how a priori available information can be utilised to predict free-riding behaviour in public goods games.

read publication

cover_DP_2017-29.jpg

Endogenous Institution Formation in Public Good Games: The Effect of Economic Education

Martin Altemeyer-Bartscher Dmitri Bershadskyy Philipp Schreck Florian Timme

in: IWH Discussion Papers, No. 29, 2017

Abstract

In a public good experiment, the paper analyses to which extent individuals with economic education behave differently in a second-order dilemma. Second-order dilemmas may arise, when individuals endogenously build up costly institutions that help to overcome a public good problem (first-order dilemma). The specific institution used in the experiment is a communication platform allowing for group communication before the first-order public good game takes place. The experimental results confirm the finding of the literature that economists tend to free ride more intensively in public good games than non-economists. The difference is the strongest in the end-game phase, yielding in the conclusion that the magnitude of the end-game effect depends on the share of economists in the pool of participants. When it comes to the building-up of institutions, the individual efficiency gain of the institution and its inherent cost function constitute the driving forces for the contribution behaviour. Providing an investment friendly environment yields in economists contributing more to the institution than non-economists. Therefore, we make clear that first-order results of a simple public good game cannot be simply applied for second-order incentive problems.

read publication
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