Information economics
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Information economics or the economics of information is the branch of microeconomics that studies how information and information systems affect an economy and economic decisions.[1]
One application considers information embodied in certain types of
The subject of "information economics" is treated under Journal of Economic Literature classification code
In recent decades, there have been influential advances in the study of information asymmetries[4] and their implications for contract theory, including market failure as a possibility.[5]
Information economics is formally related to
An example of game theory in practice would be if two potential employees are going for the same promotion at work and are conversing with their employer about the job. However, one employee may have more information about what the role would entail then the other.[11] Whilst the less informed employee may be willing to accept a lower pay rise for the new job, the other may have more knowledge on what the role's hours and commitment would take and would expect a higher pay. This is a clear use of incomplete information to give one person the advantage in a given scenario. If they talk about the promotion with each other in a process called colluding there may be the expectation that both will have equally informed knowledge about the job. However the employee with more information may mis-inform the other one about the value of the job for the work that is involved and make the promotion appear less appealing and hence not worth it. This brings into action the incentives behind information economics and highlights non-cooperative games.[11]
Value of information
The starting point for economic analysis is the observation that information has economic value because it allows individuals to make choices that yield higher expected payoffs or expected utility than they would obtain from choices made in the absence of information. Data valuation is an emerging discipline that seeks to understand and measure the economic characteristics of information and data.[12]
Information, the price mechanism and organizations
Much of the literature in information economics was originally inspired by Friedrich Hayek's "The Use of Knowledge in Society" on the uses of the price mechanism in allowing information decentralization to order the effective use of resources.
Information asymmetry
Information asymmetry means that the parties in the interaction have different information, e.g. one party has more or better information than the other. Expecting the other side to have better information can lead to a change in behavior. The less informed party may try to prevent the other from taking advantage of him. This change in behavior may cause inefficiency. Examples of this problem are selection (adverse or advantageous) and moral hazard.[15]
Adverse selection occurs when one side of the partnership has information the other does not and this can occur deliberately or by accident due to poor communication.[16] A classic paper on adverse selection is George Akerlof's The Market for Lemons.[17]
The most common example of the Lemons Market is in the automobile industry. As suggested by Akerlof, there are four car types that a buyer could consider.[17] This includes choosing either a new or used car, and choosing a good or bad car, or Lemon as it is more commonly known. When considering the market options there is possibility of purchasing a new lemon car as there is a used good car.[17] The uncertainty that arises from the probably of purchasing a lemon due to asymmetric information can cause the buyer to have doubts about the car's quality and inherent outcome when purchased.[18] This same dilemma exists in a multitude of markets where sellers have an incentive to not disclose information about their product if it is poor quality due to knowledge that the average standard across the industry from good products existing will boost their selling power.[17] The asymmetrical information known about the car's quality can lead to a breakdown in the automobile industry's overall efficiency.[19] This is due to two reasons. Firstly, uncertainty between the buyers and sellers and secondly in the broader market where only sellers with below average vehicles will be willing to sell due to the reduced quality being represented.[17] There are two primary solutions for adverse selection; signaling and screening.
Moral hazard includes a partnership between a principal and agent and occurs when the agent may change their behaviour or actions after a contract has been finalised which can cause adverse consequences for the principal.[16]
Moral hazard is present when there is a change in the agent's behaviour after taking out insurance cover to protect them.
Signaling
This idea was originally studied in the context of looking for a job. An employer is interested in hiring a new employee who is skilled in learning. Of course, all prospective employees will claim to be skilled at learning, but only they know if they really are. This is an information asymmetry.
Spence proposed that going to college can function as a credible signal of an ability to learn. Assuming that people who are skilled in learning can finish college more easily than people who are unskilled, then by attending college the skilled people signal their skill to prospective employers. This is true even if they didn't learn anything in school, and school was there solely as a signal. This works because the action they took (going to school) was easier for people who possessed the skill that they were trying to signal (a capacity for learning).[23]
Screening
In this way the underinformed party can induce the other party to reveal their information. They can provide a menu of choices in such a way that the optimal choice of the other party depends on their private information. By making a particular choice, the other party reveals that he has information that makes that choice optimal. For example, an amusement park wants to sell more expensive tickets to customers who value their time more and money more than other customers. Asking customers their willingness to pay will not work - everyone will claim to have low willingness to pay. But the park can offer a menu of priority and regular tickets, where priority allows skipping the line at rides and is more expensive. This will induce the customers with a higher value of time to buy the priority ticket and thereby reveal their type.Risk and Uncertainty of Information
Fluctuations in the availability and accuracy of information can induce some level of risk and uncertainty.
Difference between Risk and Uncertainty
Risk is defined by the circumstances under which the probability of every outcome is known by the decision-making individual and that, among all possible outcomes, it is not fully certain which will occur.[25] In contrast, uncertainty refers to the situation whereby the probability of every outcome is unknown and cannot be accurately estimated thus, individuals will often lack sufficient economic information to make an informed decision.[25]
Risk Attitudes
Risk attitude directly influences the behaviour of economic agents during decision-making under uncertainty by altering the individuals' perception towards the valuation and reliability of information within the market.[26] Stakeholders, particularly managers, will often demonstrate different risk attitudes which dictate their decision-making towards a variety of investments.
Risk attitude is classified under three main categories: risk aversion, risk neutrality and risk-seeking dispositions.
Information goods
Buying and selling information is not the same as buying and selling most other goods. There are three factors that make the economics of buying and selling information different from solid goods:
First of all, information is non-
Second, exclusion is not a natural property of information goods, though it is possible to construct exclusion artificially. However, the nature of information is that if it is known, it is difficult to exclude others from its use. Since information is likely to be both non-rivalrous and non-excludable, it is frequently considered an example of a public good.
Third is that the information market does not exhibit high degrees of transparency. That is, to evaluate the information, the information must be known, so you have to invest in learning it to evaluate it. To evaluate a bit of software you have to learn to use it; to evaluate a movie you have to watch it.
The importance of these properties is explained by De Long and Froomkin in The Next Economy.
Network effects
Carl Shapiro and Hal Varian described Network effect (also called network externalities) as products gaining additional value from each additional user of that good or service.[28] Network effects are externalities in which they provide an immediate benefit when an additional user joins the network, increasing the network size. The total value of the network depends upon the total adopters but carries only a marginal benefit for new users. This leads to a direct network effect for each user's adoption of the good, with an increased incentive for adoption as other user's adopt and join the network.[29] The indirect network effect occurs as a complementary goods benefit from the adoption of the initial product.[29]
The growth of data is constantly expanding and growing at an exponential rate, however, the application of this data is far lower than the creation of it.[30][31]
New data brings about a potential increase in misleading or inaccurate information which can crowd out the correct information. This increase in unverified information is due to the easy and free nature of creating online data, disrupting potential for users from finding sourced and verified data.[32]
Critical mass
As new networks are developed, early adopters form the social dynamics of the greater population and develop product maturity known as Critical mass. Product maturity is when they become self-sustaining and is more likely to occur when there are positive cash flows, consistent revenue flows, customer retention and brand engagement.[33] To form a following, low initial prices need to be offered, along with widespread marketing to help create the snowball effect.
More information
In 2001, the Nobel prize in economics was awarded to
See also
- Adverse selection
- Contract theory
- Game theory
- Indigo Era (economics)
- Information economy
- Moral hazard
- Product bundling
- Screening
- Signaling
- Single-crossing condition
References
- Kenneth J. Arrow, 1999. "Information and the Organization of Industry," ch. 1, in Graciela Chichilnisky Markets, Information, and Uncertainty. Cambridge University Press, pp. 20–21..
• _____, 1996. "The Economics of Information: An Exposition," Empirica, 23(2), pp. 119–128.
• _____, 1984. Collected Papers of Kenneth J. Arrow, v. 4, The Economics of Information. Description and chapter-preview links.
• Jean-Jacques Laffont, 1989. The Economics of Uncertainty and Information, MIT Press. Description Archived 2012-01-25 at the Wayback Machine chapter-preview links - ^ William D. Nordhaus (2001). Economics, p.194.
- ^ Kenneth J. Arrow, 1996. "The Economics of Information: An Exposition," Empirica, 23(2), pp. 120–21.
- ^ Charles Wilson, 2008. "adverse selection," The New Palgrave Dictionary of Economics, 2nd Edition.
- Armen A. Alchian and Harold Demsetz, 1972. "Production, Information Costs, and Economic Organization," American Economic Review, 62(5), pp. 777–795.
•OCLC 237794267., December 8, 2001.
• _____, 1987. "The Causes and Consequences of the Dependence of Quality on Prices," Journal of Economic Literature, 25(1), pp.1–48.
• _____, 2000. "The Contributions of the Economics of Information to Twentieth Century Economics," Quarterly Journal of Economics, 115(4), pp. 1441–1478.
• _____, 2002. "Information and the Change in the Paradigm in Economics," American Economic Review, 92(3), pp. 460–501[dead link]. from Nobel Prize Lecture Archived 2011-05-10 at the Wayback Machine - ^ Jan Mycielski, 1992. "Games with Perfect Information," Handbook of Game Theory with Economic Applications, v. 1, Elsevier, ch. 3, pp. 41–70.
- ^ • Adam Brandenburger, 2008. "epistemic game theory: complete information," The New Palgrave Dictionary of Economics, 2nd Edition. Abstract.
• Sylvain Sorin, 1992. "Repeated Games with Complete Information," Handbook of Game Theory with Economic Applications, v. 1, Elsevier, ch. 4, pp. 71–107. - Robert J. Aumann and Aviad Heifetz, 2002. "Incomplete Information," Handbook of Game Theory with Economic Applications, v. 3, Elsevier, ch. 43, pp. 1665–1686.–177.
• Shmuel Zamir, 1992. "Repeated Games of Incomplete Information: Zero-Sum," Handbook of Game Theory with Economic Applications, v. 1, Elsevier, ch. 5, pp. 109–154.
• Françoise Forges, 1992. "Repeated Games of Incomplete Information: Non-Zero-Sum," Handbook of Game Theory with Economic Applications, v. 1, Elsevier, ch. 6, pp. 155 - Charles R. Plott and Vernon L. Smith, 2008. Handbook of Experimental Economics Results, v. 1, Elsevier, Part 2: Market Economics of Uncertainty and Information and Part 4: Games, respectively, chapters 34–40 & 45–66 preview links..
• Karl-Gustaf Löfgren, Torsten Persson, and Jörgen W. Weibull, 2002. "Markets with Asymmetric Information: The Contributions of George Akerlof, Michael Spence and Joseph Stiglitz," Scandinavian Journal of Economics, 104(2), pp. 195–211 Archived 2012-04-25 at the Wayback Machine - Roger B. Myerson, 2008. "mechanism design," The New Palgrave Dictionary of Economics, 2nd Edition.–196.
• _____, 2008. "revelation," principle," The New Palgrave Dictionary of Economics, 2nd Edition.
• _____, 2008. "Perspectives on Mechanism Design in Economic Theory," American Economic Review, 98(3), pp. 586–603 Archived 2012-05-25 at the Wayback Machine. Revised from Nobel-prize lecture.
• Noam Nisan and Amir Ronen, 2001. "Algorithmic Mechanism Design," Games and Economic Behavior, 35(1–2), pp. 166 - ^ ISBN 978-0-08-043076-8, retrieved 2022-05-02
- ^ "The Value of Data".
- ^ • F. A. Hayek, 1945. "The Use of Knowledge in Society," American Economic Review,
35(4), pp. 519–530.
• _____, 1948. Individualism and Economic Order, Chicago. Description and chapter-preview links. - ^ Sytse Douma & Hein Schreuder (2013) "Economic Approaches to Organizations" Archived 2015-05-15 at the Wayback Machine, 5th edition, London: Pearson
- ^ "Sources of Inefficiency". LumenLearning.
- ^ ISBN 978-3-319-65267-2.
- ^ a b c d e George Akerlof, 1970. "The Market for 'Lemons': Quality Uncertainty and the Market Mechanism," Quarterly Journal of Economics, 84(3), pp. 488–500.
- S2CID 212872163.
- ISSN 1945-7669.
- S2CID 57559397.
- S2CID 154456091.
- Bengt Holmstrom, 1979. "Moral Hazard and Observability", Bell Journal of Economics, 10(1), pp. 74–91 Archived 2012-04-07 at the Wayback Machine.
- ^ Michael A. Spence, 1973. "Job Market Signaling," Quarterly Journal of Economics, 83(3), pp. 355–377.
- ^ Joseph E. Stiglitz, 1975. "The Theory of 'Screening', Education, and the Distribution of Income," American Economic Review,65(3), pp. 283–300.
- ^ ISBN 978-1-349-94848-2.
- .
- ISBN 978-0-333-78676-5.
- OCLC 39210116.
- ^ a b Klemperer P. (2018) Network Goods (Theory). In: Macmillan Publishers Ltd (eds) The New Palgrave Dictionary of Economics. Palgrave Macmillan, London
- ^ Greaton, Timothy (23 December 2019). "What's causing the exponential growth of data?". Nikko Asset Management.
- .
- ^ Kim, Henry (29 March 2017). "When Bad Information Crowds out the Good". Medium.
- ^ "How to Achieve Critical Mass for a Product Launch". Interaction Design Foundation. September 2020.
- ^ "The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 2001". nobelprize.org. Retrieved 10 April 2018.
Further reading
Papers
- Bakos, Yannis and Brynjolfsson, Erik 2000. "Bundling and Competition on the Internet: Aggregation Strategies for Information Goods" Marketing Science Vol. 19, No. 1 pp. 63–82.
- Bakos, Yannis and Brynjolfsson, Erik 1999. "Bundling Information Goods: Pricing, Profits and Efficiency" Management Science, Vol. 45, No. 12 pp. 1613–1630
- Brynjolfsson, Erik, and Saunders, Adam, 2009. "Wired for Innovation: How information technology is reshaping the economy", [1], ISBN 978-0-262-01366-6
- Mas-Colell, Andreu; Michael D. Whinston, and Jerry R. Green, 1995, Microeconomic Theory. Oxford University Press. Chapters 13 and 14 discuss applications of adverse selection and moral hazard models to contract theory.
- Milgrom, Paul R., 1981. "Good News and Bad News: Representation Theorems and Applications," Bell Journal of Economics, 12(2), pp. 380–391.
- Nelson, Phillip, 1970. "Information and Consumer Behavior," Journal of Political Economy, 78(2), p p. 311–329.
- _____, 1974. "Advertising as Information," Journal of Political Economy, 82(4), pp. 729–754. Technology, 978-0134645957
- Pissarides, C. A., 2001. "Search, Economics of," International Encyclopedia of the Social & Behavioral Sciences, pp. 13760–13768. Abstract.
- Rothschild, Michael and Joseph Stiglitz, 1976. "Equilibrium in Competitive Insurance Markets: An Essay on the Economics of Imperfect Information," Quarterly Journal of Economics, 90(4), pp. 629–649.
- Hal R. Varian, 1999. Information Rules: A Strategic Guide to the Network Economy. Harvard University Press. Description and scroll to chapter-preview links.
- Stigler, George J., 1961. "The Economics of Information," Journal of Political Economy, 69(3), pp. 213–225.
- Stiglitz, Joseph E. and Andrew Weiss, 1981. "Credit Rationing in Markets with Imperfect Information," American Economic Review, 71(3), pp. 393–410.
Monographs
- Birchler, Urs, and Monika Bütler, 2007. Information Economics. London, Routledge.
- ISBN 9780273735298
- Maasoumi, Esfandiar, 1987. "Information theory," The New Palgrave: A Dictionary of Economics, v. 2, pp. 846–51.
- Marilyn M. Parker, Robert J. Benson, H.E. Trainor, 1988, [http://www.palgrave-journals.com/jit/journal/v5/n1/abs/jit199013a.html Information Economics: Linking Business Performance to Information
- Theil, Henri, 1967. Economics and Information Theory. Amsterdam, North Holland.
Dictionaries
- The New Palgrave Dictionary of Economics, 2008. 2nd Edition, selected entries:
- "bubbles" by Markus K. Brunnermeier
- "information aggregation and prices" by James Jordan.
- "information cascades,"] by Sushil Bikhchandani, David Hirshleifer, and Ivo Welch.
- "information sharing among firms" by Xavier Vives.
- "information technology and the world economy"] by Dale W. Jorgenson and Khuong Vu.
- "insider trading" by Andrew Metrick.
- "learning and information aggregation in networks"] by Douglas Gale and Shachar Kariv.
- "mechanism design" by Roger B. Myerson.
- "revelation principle" by Roger B. Myerson.
- "monetary business cycles (imperfect information)"] by Christian Hellwig.
- "prediction markets" by Justin Wolfers and Eric Zitzewitz.
- "social networks in labour markets" by Antoni Calvó-Armengo and Yannis M. Ioannides.
- "strategic and extensive form games" by Martin J. Osborne.
External links
- Media related to Information economics at Wikimedia Commons