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Rational and non rational decision making
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Economics is probably the science that arguably has had the most impact in today’s times. In fact it can barely be called a science in a strict sense, since human behavior is not governed by laws of nature unlike other non living objects, which makes the prediction and forecasting stock prices, economic conditions all the more difficult. In recent decades economists have tried to give a more structured and mathematical explanation to their theories concerning how human beings make their decisions. However these theories have come under immense criticism as they don’t hold true in real time. In reality, human beings rarely behave rationally which is the basic assumption in many of the economic theories; rather we make a lot of our decisions based on our intuition and limited knowledge available to us. When the financial crisis of 2008 came upon us, a lot of questions were raised on the apparent predictive abilities of the various economic theories. Merely 12 economists were able to foresee the massive crisis which now shows signs of deepening into a double dip recession.
Since then economists have looked at alternative theories to explain and predict the real world dynamics. This is where the behavioral economics comes in. Among other things, it seeks to explain why humans behave how they behave, what are the impacts of this in the economy (here we are particularly concerned with financial markets), how we can avoid various biases to make better investment decisions.
What is the role of investor’s confidence in the financial markets? Why a downgrade of the US treasury sends ripples in the stock markets all over the world .How do investors react to such kind of information? Do we take all the information into account before...
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...s have shown that humans are risk averse, and they value loss more than gains from a bet, which means that wealth shows diminishing marginal utility.
There is a lot of research work going on in this particular field, more so since the crisis of 2008. The purpose of this article was to make readers aware of the subject .Behavioral finance is an interesting mix of logics, psychology and economics. Budding investors and management students should look into this in more detail so that they are better equipped to make financial decisions.
Works Cited
Predictably Irrational: Dan Ariely.
Fooled by Randomness: Nicholas Nassim Taleb
Black Swan: Nicholas Nassim Taleb.
Research paper: Behavioral Finance: Thomas Sewell.
Research paper: Herd Behavior in Financial Markets: Sushil Bikchandani and Sunil Sharma.
Buttonwood blog (The Economist): Foolishness of the crowd.
A number one bestseller many say is grasping in amazement: Freakonomics is said to unravel the untold stories of life. Steven D. Levitt and Stephen J. Dubner break common misconceptions about economics by revealing its true science. Freakonomics shatters the view of economics as an arid study of finance and markets. They pull in information to make inferences on past occurrences that subtly influence the present. Freakonomics packs punch with its countless number of tables and figures, serving as concrete data to make assumptions.
Although the author does raise some very interesting and provoking questions in the beginning of the article, unfortunately, some of them are very difficult to answer, or just can’t be answered. While the article doesn’t solve any problems, it does raise awareness and creates some interesting connections with the present and the past. The overall question the author wishes to answer is "how can economists understand and explain the nature of societal change?"
Before the theories of behavioral economics clarified by Daniel Kahneman, economics was a generally straightforward field. Adding this new approach to consumer behavior makes us seem less like robots acting only as economics expects us to act and more like the more or less irrational beings we are. Daniel Kahneman is one of only a couple non-economists and the first psychologist to win the Nobel prize in Economics for his work in the relatively new field of behavioral economics.
Due to this passive view or narrow framing, people fail to understand the totality of a give situation. The rational-agent model assumes that investors make their choices in a comprehensively inclusive, broad framing manner, which factors all relevant details, including future opportunities and risk. In reality, investors have the tendency to evaluate their portfolios based on an extremely short time horizon. In addition, investor decisions about a particular investment are often considered in isolation of the total portfolio, especially if a loss occurs, as opposed to a comprehensive manner. Ultimately, short-term evaluations lead to excessive trading, increased portfolio expenses and
Psychologists, Daniel Kahneman and Amos Tversky, created what is considered the most famous element of behavioral economics; prospect theory. Prospect theory is a theory of how people form decisions about prospects. A prospect is a gamble or a decision made about uncertainty. Within prospect theory, the value function represents how people value things. The weighting function infers how people deal with probabilities. People don’t weigh gains and losses the same. What they found is that people’s value or utility diminishes as they gain more. But for losses, it’s the
However, economics is relative to everyone’s life. We can still feel the wound of financial crisis up to today. It’s useful for everyone to learn something about economics.
Paul A. Samuelson, one of the men who made Harvard’s reputation, made various contributions to modern economics. Samuelson brought numerous theories to the table, showing that math is an effective and necessary component of understanding economics. Furthermore, he discovered a new obstacle regarding inflation, known as “cost-push” inflation. But most importantly, Paul A. Samuelson has shown that economic theories can be timeless, however their implementation evolves around the current economic circumstances that are in play.
The theory of economics does not furnish a body of settled conclusions immediately applicable to policy. It is a method rather than a doctrine, an apparatus of the mind, a technique for thinking, which helps the possessor to draw correct conclusions. The ideas of economists and politicians, both when they are right and when they are wrong, are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men, who believe themselves to be quite exempt from any intellectual influences, are usually the slaves of some defunct economist." (John Maynard Keynes, the General Theory of Employment, Interest and Money p 383)
The crucial importance and relevance of economics related disciplines to the modern world have led me to want to pursue the study of these social sciences at a higher level. My study of Economics has shown me the fundamental part it plays in our lives and I would like to approach it with an open mind - interested but not yet fully informed.
Supply and demand is one of the most simple-looking aspects of an economy and its study, but yet it presents the greatest challenge to analysts. Although most events can be mathematically calculated to perfection, the human aspect always intervenes and throws off a calculation. Dealing with the imperfections of psychology differentiates a modern analyst with initiative over one who follows an equation.
Finance is a field that had always fascinated me right from my undergraduate college days. What make me interested in this particular field of study are the art of finance and the complexity of investment market which would allow me to employ my personal skills, such as analytical and communication skills, along with my personal characteristics such as dedication and compassion for what I do. As one of the most important sector in the world, I believe it would provide me with a broad range of career options.
where E_w is the expected future wealth and σ_w indicates the predicted standard deviation of the possible divergence of actual future wealth from the expected future wealth E_w. Thus, for risk-averse investors, dU⁄(dE_w )>0 and dU⁄(dσ_w )<0. In the presence of two risky assets, the investment opportunity curve is determined by assets’ expected rate of return, risk and the correlation between different assets. The same analysis also applies to determining the utility of an investor who invests in the combination of ri...
Our understanding and the concept of investment in behavioural finance combines economics and psychology to analyse how and why investors make final decision. As an investor one’s decision to invest is fully influence by different type of attitudes of behavioural and psychological ( Ricciardi & Simon, 2000). Yet, in order to maximize their financial goal, investors must have a good investment planning. Furthermore , to gain a good investment planning , there must be a good decision making among investors. They have to choose the right investment plan I order to manage the resources for different type of investments not only to gain profit wise but also to avoid the risk that occur from investment.
The main objective of economist is to maintain maximum output in production. In order to reach maximum efficiency, there are three questions that economists have to address. What to produce? Who are we going to produce these goods for? And, how are we going to produce it? All of these questions were answered by Adam Smith, a famous economist. Smith believes that there is such a thing as an “invisible hand” of economics that acts as the decider to all the basic three economic questions (Group Presentation).
This paper will define and discuss five financial theories and how they impact business decisions made by financial managers. The theories will be the Modern Portfolio Theory, Tobin Separation Theorem, Equilibrium Theory, Arbitrage Pricing Theory (APT), and the Efficient Markets Hypothesis.