This paper describes the basic elements of an experimental design, beginning with a short introduction to that topic with the example why are people contributing willingly money and why they act the way they act. Then the most commonly design of the voluntary contribution mechanisms is shortly analyzed followed from disturbing factors that might influence an experiment in an undesireable way. That may distort the evaluation process. Next to this most influencing factors are analysed which lead to different human behaviour and explain the experiments' results on factors like altruism, group size, earnings, etc. Finally a conclusion sums up and suggests an experiment over the internet where the "experimentator" is able to follow the decision process in a kind of chatroom.
Dieses Paper bietet ein Übersicht über experimentelle Rahmenbedingungen, die sich mit dem "Trittbrettfahrerverhalten" beschäftigen. Dabei wird nach einer Einleitung auf die grundsätzlichen "Basisbeschaffenheiten" eines Experiments abgestellt und es werden mögliche verzerrende (nichtintendierte) Faktoren analysiert, die das Expermiment "verfälschen" können. Schließlich werden Erklärungsansätze für die unterschiedlichen experimentellen Resultate anhand der wichtigsten Einflussgrößen wie Altruismus, Gruppengröße, Lerneffekte, u.a. erklärt. Im Fazit wird dann ein letztes Beispiel gebracht, in dem die Interaktionen zwischen den Teilnehmern beobachtet werden können, da das Experiment über das Internet durchgeführt worden ist und es werden Dinge aufgezeigt, die künftig noch zu erforschen sind.
Table of Contents
1. General Introduction
2. Introduction to free-riding experiments
2.1. Experimental design
2.2. The Voluntary Contribution Mechanism
2.3. “Contradictional effects”
a. Public good is not “pure”
b. Unknown group optimum / payoff
c. Misunderstanding
d. Uncertainty
e. Insufficient economic incentive
f. Small groups
g. Interactions
2.4. Explaining different Experimental results
2.4.1. Altruism and Warm Glow
2.4.2. Framing
2.4.3. Influence of MPCR and Group Size
2.4.4. Learning
2.4.5. Communication
3. Conclusions
Research Objectives and Topics
This seminar paper investigates the "free-rider problem" within the context of public goods provision, aiming to explain why experimental results often diverge from traditional rational choice theory and exploring the mechanisms that influence individual contribution behavior.
- The theoretical distinction between private and public goods.
- Experimental methodology, specifically the Voluntary Contribution Mechanism (VCM).
- External influences on experimental outcomes (e.g., uncertainty, framing, communication).
- Motivational factors for cooperation, including altruism, warm-glow effects, and learning.
Excerpt from the Book
2.3. “Contradictional effects”
On of the most important facts in experiments are external influences or a less precise description of the experiment that might distort the results of public goods experiments and finally might lead to wrong conclusions about the extent of free-riding behavior. These factors are not the content of an experiment but might influence the outcome fatefully. So it will be quite difficult to transfer the outcome of experiments to real decisions that might help to correct the underprovision of a public good and to draw conclusions where to tackle the problem. The worst outcome of an experiment would be the nonexistence of the free-rider-behavior just because of factors that influence the subjects acting in such a way that the result is not very meaningful. Therefore experiment designs should be tested if the most of these factors are fulfilled. Factors that will be discussed are impure public goods, an unknown group optima/payoff, uncertainty, insufficient economic incentives, small groups and interactions.
Summary of Chapters
1. General Introduction: Introduces the definition of the free-rider problem and the economic theory of public goods, highlighting the contradiction between rational utility theory and observed philanthropic behavior.
2. Introduction to free-riding experiments: Provides an overview of experimental approaches to the free-rider problem, detailing the VCM framework and discussing various factors that cause experimental results to deviate from theoretical expectations.
3. Conclusions: Synthesizes the findings, suggesting that while the private provision of public goods is complex, current economic theory is overly pessimistic, and advocates for further research into instruments that foster cooperation.
Keywords
Free-rider problem, Public goods, Voluntary Contribution Mechanism, VCM, Altruism, Warm-glow, Framing, MPCR, Marginal per capita return, Game theory, Prisoner’s dilemma, Experimental economics, Cooperation, Rational choice theory, Externalities.
Frequently Asked Questions
What is the core subject of this paper?
The paper examines the "free-rider problem," specifically analyzing why individuals contribute to public goods in experimental settings despite the theoretical prediction that they should free-ride.
What are the primary themes discussed?
The main themes include the distinction between private and public goods, the mechanics of voluntary contribution, the role of altruism and warm-glow motivations, and the impact of experimental design features like framing and communication.
What is the main objective or research question?
The goal is to investigate why experimental cooperation levels often exceed standard theoretical predictions and to analyze the specific factors that influence human decision-making in public good provision.
Which scientific methodology is utilized?
The paper employs a comprehensive review of existing experimental literature and laboratory studies using game theory frameworks to evaluate the Voluntary Contribution Mechanism.
What is covered in the main body?
The main body focuses on the design of experiments, common "contradictional effects" such as uncertainty and small group dynamics, and an evaluation of explanations for variance in results, such as framing and learning.
Which keywords best characterize the work?
Key terms include public goods, free-rider problem, VCM, altruism, warm-glow, framing, and experimental economics.
How does the concept of "impure altruism" contribute to the findings?
Impure altruism, as discussed in the text, combines pure altruism with the "warm-glow" feeling of contributing, which helps explain observed patterns of giving that pure egoistic models cannot account for.
Why is communication considered an important "intervention" in experiments?
Communication is highlighted as a successful intervention because it allows for social interaction and coordination, which significantly improves the economic efficiency of public goods provision compared to non-communicating groups.
- Quote paper
- Christian Altrichter (Author), 2006, Experimental evidence on the free rider problem, Munich, GRIN Verlag, https://www.grin.com/document/70368
