This paper discusses aspects of disposition effects in several ways and perspectives. There is evidence, that investors sell winners earlier and hold losers longer. Theories from mental accounting, prospect theory, self-control, decision dependent emotions, internal locus of control, and many more relate to the disposition effect.
After discussing them shortly, we investigate experiments in the laboratory and empirical evidence to come to the conclusion, that disposition effects exist for single investors and more pronounced for team investors. Tax considerations, automatic selling and decision dependent emotions change the proportion of how much investors are prone to disposition effects. The following mindmap shows an impression of the most important connections between the different effects.
Table of Contents
1. Introduction
2. Basic discussion of the disposition effect
2.1. The main elements of the disposition effect
2.2. Empirical evidence of the disposition effect
2.3. Interaction of the effects
3. Experimental analysis of the the disposition effect for single investors
3.1. Theoretical background for the experiments
3.3. Results
3.4. Discussion of the results
4. Experimental analysis of the the disposition effect for team investors
4.1. Theoretical background for the experiments
4.2. Conceptual Background
4.3. Hypotheses and Experimental Procedures
4.4. Inferences
4.5. Conclusions
5. Discussion
Objectives and Key Themes
This paper examines the behavioral finance phenomenon known as the disposition effect—the tendency of investors to sell winning stocks too early and hold losing stocks too long. It explores the psychological drivers behind this behavior and investigates whether team-based decision-making mitigates or exacerbates these biases compared to individual investors.
- Theoretical foundations including prospect theory, mental accounting, and regret aversion.
- Experimental analysis of disposition effects in single-investor settings.
- Comparative study of disposition effects in team-based investment environments.
- The impact of group polarization and decision-dependent emotions on trading behavior.
- Empirical evidence on how tax considerations and automatic selling influence investment outcomes.
Excerpt from the Book
2.1.1. Prospect theory
This theory is based on the article from (Kahneman & Tversky, 1979) who did the first pioneering steps towards a descriptive theory of choice under uncertainty which investigates the fact, that investors sell winner too early and ride losers too long. This behavior is not rational according to maximize profit, because the investor behaves to increase his utility. In this case his mental utility function (happy by generating a gain or sad by generating a loss) weights the realization of a gain or loss not perfectly rational. (Shefrin & Statman, 1985) show, that prospect theory is a combination of several features. They say there is an “editing stage” where decision makers frame all choices to a fixed reference point like the purchase price. Then comes the “evaluating stage” where the investor decides based on his utility preferences. Prospect theory exhibits a S-shaped valuation function, whereas standard theory would suggest a linear function for an absolut rational investor. We can visualize this S-shaped valuation function easily with a trivial exponential function where alpha is bigger than zero and smaller than one.
Summary of Chapters
1. Introduction: Outlines the scope of the paper, introducing the disposition effect and the basic research questions regarding investor behavior and team decision-making.
2. Basic discussion of the disposition effect: Discusses the theoretical underpinnings, including prospect theory, mental accounting, and self-control, as well as empirical evidence from existing literature.
3. Experimental analysis of the the disposition effect for single investors: Details experiments focused on individual investors, examining how reference points and automatic selling conditions affect the propensity to realize gains or losses.
4. Experimental analysis of the the disposition effect for team investors: Investigates the behavior of teams in investment scenarios, focusing on the influence of group polarization and decision-dependent emotions.
5. Discussion: Synthesizes the findings, reflecting on the complexity of market phenomena and the limitations of applying purely rational models like the capital asset pricing model to human decision-making.
Keywords
Disposition effect, Behavioral economics, Prospect theory, Mental accounting, Regret aversion, Team decision-making, Group polarization, Investment behavior, Loss realization, Market phenomena, Financial markets, Self-control, Trading volume, Reference point, Decision-dependent emotions
Frequently Asked Questions
What is the primary focus of this research?
The research focuses on the disposition effect, a behavioral bias where investors realize gains prematurely and hold losses for too long, and examines its manifestation in both individual and team decision-making.
What are the core thematic areas?
The core themes include psychological theories of decision-making under uncertainty, the impact of group dynamics on financial choices, and empirical evaluations of trading strategies.
What is the main objective of the paper?
The main objective is to identify whether the disposition effect persists across different investor structures and to determine if team investing effectively reduces or intensifies these cognitive biases.
Which methodology is employed in the study?
The study relies on a review of existing academic literature and an experimental approach comparing the performance and decision patterns of individual participants versus randomly matched teams.
What topics are covered in the main body?
The main body covers the theoretical frameworks of the disposition effect, detailed experimental designs for single and team investors, and the statistical analysis of trading outcomes.
Which keywords best characterize this work?
Key terms include disposition effect, behavioral economics, prospect theory, group polarization, and investment psychology.
How does group polarization impact the disposition effect?
Group polarization is shown to enhance decision-dependent emotions, leading teams to exhibit more pronounced disposition effects than individual investors due to shared perceptions of regret.
Is there a significant difference in the disposition effect between teams and individuals?
Yes, the paper concludes that the disposition effect is more strongly pronounced in teams, suggesting that group interaction can worsen rather than mitigate this specific investment bias.
- Quote paper
- Julian Fischer (Author), 2017, Market Phenomena. Investors and the Disposition Effect, Munich, GRIN Verlag, https://www.grin.com/document/352840
