Collusion

Collusion is a deceitful agreement or secret cooperation between two or more parties to limit open competition by deceiving, misleading or defrauding others of their legal right. Collusion is not always considered illegal. It can be used to attain objectives forbidden by law; for example, by defrauding or gaining an unfair market advantage. It is an agreement among firms or individuals to divide a market, set prices, limit production or limit opportunities.[1] It can involve "price or wage fixing, kickbacks, or misrepresenting the independence of the relationship between the colluding parties".[2] In legal terms, all acts effected by collusion are considered void.[3]

## Contents

* 1 Definition
* 1.1 Tacit collusion
* 2 Base model of (price) collusion
* 3 Variations
* 4 Deviation
* 5 Indicators
* 6 Examples
* 6.1 United States
* 6.2 Europe
* 6.3 Australia
* 7 Barriers
* 8 Conditions conducive to collusion
* 9 Government intervention
* 10 See also
* 11 Further reading
* 12 References
* 12.1 General references
* 12.2 References

## Definition

In the study of economics and market competition, collusion takes place within an industry when rival companies cooperate for their mutual benefit. Conspiracy usually involves an agreement between two or more sellers to take action to suppress competition between sellers in the market. Because competition among sellers can provide consumers with low prices, conspiracy agreements increase the price consumers pay for the goods. Because of this harm to consumers, it is against antitrust laws to fix prices by agreement between producers, so participants must keep it a secret. Collusion often takes place within an oligopoly market structure, where there are few firms and agreements that have significant impacts on the entire market or industry. To differentiate from a cartel, collusive agreements between parties may not be explicit; however, the implications of cartels and collusion are the same.[4]

Under competition law, there is an important distinction between direct and covert collusion. Direct collusion generally refers to a group of companies communicating directly with each other to coordinate and monitor their actions, such as cooperating through pricing, market allocation, sales quotas, etc. On the other hand, tacit collusion is where companies coordinate and monitor their behavior without direct communication. This type of collusion is generally not considered illegal, so companies guilty of tacit conspiracy should face no penalties even though their actions would have a similar economic impact as explicit conspiracy.

Collusion results from less competition through mutual understanding, where competitors can independently set prices and market share.[5] A core principle of antitrust policy is that companies must not communicate with each other. Even if conversations between multiple companies are illegal but not enforceable, the incentives to comply with collusive agreements are the same with and without communication. It is against competition law for companies to have explicit conversations in private. If evidence of conversations is accidentally left behind, it will become the most critical and conclusive evidence in antitrust litigation. Even without communication, businesses can coordinate prices by observation, but from a legal standpoint, this tacit handling leaves no evidence. Most companies cooperate through invisible collusion, so whether companies communicate is at the core of antitrust policy.[6]

Collusion is illegal in the United States, Canada, Australia and most of the EU due to antitrust laws, but implicit collusion in the form of price leadership and tacit understandings still takes place.

### Tacit collusion

Covert collusion is known as tacit collusion and is considered legal. Adam Smith in The Wealth of Nations explains that since the masters (business owners) are fewer in number, it is easier to collude to serve common interests among those involved, such as maintaining low wages, whilst it is difficult for the labour to coordinate to protect their interests due to their vast numbers. Hence, business owners have a bigger advantage over the working class. Nevertheless, according to Adam Smith, the public rarely hears about coordination and collaborations that occur between business owners as it takes place in informal settings.[7] Some forms of explicit collusion are not considered impactful enough on an individual basis to be considered illegal, such as that which occurred by the social media group WallStreetBets in the GameStop short squeeze.[8] There are many ways that implicit collusion tends to develop:

* The practice of stock analyst conference calls and meetings of industry participants almost necessarily results in tremendous amounts of strategic and price transparency. This allows each firm to see how and why every other firm is pricing their products.
* If the practice of the industry causes more complicated pricing, which is hard for the consumer to understand (such as risk-based pricing, hidden taxes and fees in the wireless industry, negotiable pricing), this can cause competition based on price to be meaningless (because it would be too complicated to explain to the customer in a short advertisement). This causes industries to have essentially the same prices and compete on advertising and image, something theoretically as damaging to consumers as normal price fixing.[9]

## Base model of (price) collusion

For a cartel to work successfully, it must:

* Co-ordinate on the conspiracy agreement (bargaining, explicit or implicit communication).
* Monitor compliance.
* Punish non-compliance.
* Control the expansion of non-cartel supply.
* Avoid inspection by customers and competition authorities.

Regarding stability within the cartel:

* Collusion on high prices means that members have an incentive to deviate.
* In a one-off situation, high prices are not sustainable.
* Requires long-term vision and repeated interactions.
* Companies need to choose between two approaches：

1. Insist on collusion agreements (now) and promote cooperation (future).
2. Turn away from the alliance (now) and face punishment (future).

* Two factors influence this choice: (1) deviations must be detectable (2) penalties for deviations must have a significant effect.
* Collusion is illegal, contracts between cartels establishing collusion are not protected by law, cannot be enforced by courts, and must have other forms of punishment[10]

## Variations

* π(Pc)n(1−δ)≥π(Pc)->1n(1−δ)≥1
* 1≥n(1−δ)
* 1≥n−nδ
* nδ≥n−1
* δ≥n−1n

Suppose this market has n firms. At the collusive price, the firms are symmetric, so they divide the profits equally between the whole industry, represented as π(Pc)n. If and only if the profit of choosing to deviate is greater than that of sticking to collude, i.e.

* π(Pc)n(1−δ)≥π(Pc) (Companies have no incentive to deviate unilaterally)
* Therefore, the cartel alliance will be stable when δ≥n−1n is the case, i.e. the firm has no incentive to deviate unilaterally. So as the number of firms increases, the more difficult it is for The Cartel to maintain stability.

As the number of firms in the market increases, so does the factor of the minimum discount required for collusion to succeed.[11]

According to neoclassical price-determination theory and game theory, the independence of suppliers forces prices to their minimum, increasing efficiency and decreasing the price-determining ability of each firm.[12] However, if all firms collude to increase prices, loss of sales will be minimized, as consumers lack choices at lower prices and must decide between what is available. This benefits the colluding firms, as they generate more sales at the cost of efficiency to society.[4] However, depending on the assumptions made in the theoretical model on the information available to all firms, there are some outcomes, based on Cooperative Game Theory, where collusion may have higher efficiency than if firms did not collude.[13]

One variation of this traditional theory is the theory of kinked demand. Firms face a kinked demand curve if, when one firm decreases its price, other firms are expected to follow suit to maintain sales. When one firm increases its price, its rivals are unlikely to follow, as they would lose the sales gains they would otherwise receive by holding prices at the previous level. Kinked demand potentially fosters supra-competitive prices because any one firm would receive a reduced benefit from cutting price, as opposed to the benefits accruing under neoclassical theory and certain game-theoretic models such as Bertrand competition.[12]

Collusion may also occur in auction markets[14] and in procurement[15] when independent bidders coordinate their bids (bid rigging).

## Deviation

Future collusive profits

Actions that generate sufficient returns in the future are important to every company, and the probability of continued interaction and the company discount factor must be high enough. The sustainability of cooperation between companies also depends on the threat of punishment, which is also a matter of credibility. Firms that deviate from cooperative pricing will use MMC in each market. MMC increases the loss of deviation, and incremental loss is more important than incremental gain when the firm's objective function is concave. Therefore, the purpose of MMC is to strengthen corporate compliance or inhibit deviant collusion.[16]

The principle of collusion: firms give up deviation gains in the short term in exchange for continued collusion in the future.

* Collusion occurs when companies place more emphasis on future profits
* Collusion is easier to sustain when the choice deviates from the maximum profit to be gained is lower (i.e. the penalty profit is lower) and the penalty is greater.
* Future collusive profits − future punishment profits ≥ current deviation profits − current collusive profits-collusion can sustain.[16]

Scholars in economics and management have tried to identify factors explaining why some firms are more or less likely to be involved in collusion. Some have noted the role of the regulatory environment[17] and the existence of leniency programs.[18]

## Indicators

Some actions that may indicate collusion among competitors are:

* Charging uniform prices or setting prices that are either too high or too low without justification
* Paying or receiving kickbacks and agreeing to refer customers only to each other
* Dividing territories and horizontal territorial allocation of markets among themselves
* Tying agreements and anticompetitive Product bundling (although, not all product bundling is anticompetitive)
* Refusal to deal with certain customers or suppliers and exclusive dealing with certain customers or suppliers
* Selling products below cost in order to drive out competitors (also known as dumping)
* Restricting the distribution or supply of products along the supply chain through vertical restraints
* Bid rigging by fixing bids or agreeing not to bid for certain contracts[15]

## Examples

Set higher prices

* In the example in the picture, the dots in Pc and Q represent competitive industry prices. If firms collude, they can limit production to Q2 and raise the price to P2. Collusion usually involves some form of agreement to seek a higher price.
* When companies discriminate, price collusion is less likely, so the discount factor needed to ensure stability must be increased. In such price competition, competitors use delivered pricing to discriminate in space, but this does not mean that firms using delivered pricing to discriminate cannot collude.[19]

### United States

* Market division and price-fixing among manufacturers of heavy electrical equipment in the 1960s, including General Electric.[20]
* An attempt by Major League Baseball owners to restrict players' salaries in the mid-1980s.
* The sharing of potential contract terms by NBA free agents in an effort to help a targeted franchise circumvent the salary cap.
* Price fixing within food manufacturers providing cafeteria food to schools and the military in 1993.
* Market division and output determination of livestock feed additive, called lysine, by companies in the US, Japan and South Korea in 1996, Archer Daniels Midland being the most notable of these.[21]
* Chip dumping in poker[22] or any other card game played for money.
* Ben and Jerry's and Häagen-Dazs collusion of products in 2013: Ben and Jerry's makes chunkier flavors with more treats in them, while Häagen-Dazs sticks to smoother flavors.[23]
* Google and Apple against employee poaching, a collusion case in 2015 wherein it was revealed that both companies agreed not to hire employees from one another in order to halt the rise in wages.[24]
* Google has been hit with a series of antitrust lawsuits. In October 2020, the US Department of Justice filed a landmark lawsuit alleging that Google unlawfully boxed out competitors by reaching deals with phone makers, including Apple and Samsung, to be the default search engine on their devices.[25] Another lawsuit filed by nearly 40 attorneys general on Dec. 17, 2020 alleges that Google's search results favored its own services over those of more-specialized rivals, a tactic that harmed competitors.[25]

### Europe

* The illegal collusion between the giant German automakers BMW, Daimler and Volkswagen, discovered by the European Commission in 2019, to hinder technological progress in improving the quality of vehicle emissions in order to reduce the cost of production and maximize profits.[26]

### Australia

* Japanese shipping company Kawasaki Kisen Kaisha Ltd (K-Line) were fined $34.5 million by the Federal Court for engaging in criminal cartel conduct. The court found that K-Line participated in a cartel with other shipping companies to fix prices on the transportation of cars, trucks, and buses to Australia between 2009 and 2012. K-Line pleaded guilty in April 2018 and the fine is the largest ever imposed under the Competition and Consumer Act. The court noted that the penalty should serve as a strong warning to businesses that cartel conduct will not be tolerated and will result in serious consequences.[27]
* Between 2004 and 2013, Dr Esra Ogru, the former CEO of an Australian biotech company called Phosphagenics, colluded with two colleagues by using false invoicing and credit card reimbursements to defraud her employer of more than $6.1 million.[28][29]

## Barriers

There can be significant barriers to collusion. In any given industry, these may include:

* The number of firms: As the number of firms in an industry increases, it is more difficult to successfully organize, collude and communicate.
* Cost and demand differences between firms: If costs vary significantly between firms, it may be impossible to establish a price at which to fix output. Firms generally prefer to produce at a level where marginal cost meets marginal revenue, if one firm can produce at a lower cost, it will prefer to produce more units, and would receive a larger share of profits than its partner in the agreement.[13]
* Asymmetry of information: Colluding firms may not have all the correct information about all other firms, from a quantitative perspective (firms may not know all other firms' cost and demand conditions) or a qualitative perspective (moral hazard). In either situation, firms may not know each other's preferences or actions, and any discrepancy would incentive at least one actor to renege.[13]
* Cheating: There is considerable incentive to cheat on collusion agreements; although lowering prices might trigger price wars, in the short term the defecting firm may gain considerably. This phenomenon is frequently referred to as "chiseling".
* Potential entry: New firms may enter the industry, establishing a new baseline price and eliminating collusion (though anti-dumping laws and tariffs can prevent foreign companies from entering the market).
* Economic recession: An increase in average total cost or a decrease in revenue provides the incentive to compete with rival firms in order to secure a larger market share and increased demand.
* Anti-collusion legal framework and collusive lawsuit. Many countries with anti-collusion laws outlaw side-payments, which are an indication of collusion as firms pay each other to incentivize the continuation of the collusive relationship, may see less collusion as firms will likely prefer situations where profits are distributed towards themselves rather than the combined venture.[13]
* Leniency Programs: Leniency programs are policies that reduce sanctions against collusion if a participant voluntarily confesses their behavior or cooperates with the public authority's investigation.[30] One example of a leniency program is offering immunity to the first firm who comes clean and gives the government information about collusion.[31] These programs are designed to destabilize collusion and increase deterrence by encouraging firms to report illegal behavior.

## Conditions conducive to collusion

There are several industry traits that are thought to be conducive to collusion or empirically associated with collusion. These traits include:

* High market concentration: High market concentration refers to a market with few firms, which makes it easier for these firms to collude and coordinate their actions.[32]
* Homogeneous products: Homogeneous products refer to products that are similar in nature, which makes it easier for firms to agree on prices and reduces the incentive for firms to compete on product differentiation[32]
* Stable demand and/or excess capacity: Stable demand and capacity implies predictability and therefore demand and capacity does not fluctuate significantly, which makes it easier for firms to coordinate their actions and maintain a collusive agreement.[33] This can also refer to a situation where firms have more production capacity than is needed to meet demand.[34]

## Government intervention

Collusion often occurs within an oligopoly market structure, which is a type of market failure. Therefore, natural market forces alone may be insufficient to prevent or deter collusion, and government intervention is often necessary.

Fortunately, various forms of government intervention can be taken to reduce collusion among firms and promote natural market competition.

* Fines and imprisonment to companies that collude and their executives who are personally liable.
* Detect collusion by screening markets for suspicious pricing activity and high profitability.
* Provide immunity (leniency) to the first company to confess and provide the government with information about the collusion.[35]

## See also

* Conscious parallelism
* Corporate crime
* Competition law

## Further reading

* Chassang, Sylvain; Ortner, Juan (2023). "Regulating Collusion". Annual Review of Economics 15 (1)

## References

### General references

* Vives, X. (1999) Oligopoly pricing, MIT Press, Cambridge MA (readable; suitable for advanced undergraduates.)
* Tirole, J. (1988) The Theory of Industrial Organization, MIT Press, Cambridge MA (An organized introduction to industrial organization)
* Tirole, J. (1986), "Hierarchies and Bureaucracies", Journal of Law Economics and Organization, vol. 2, pp. 181–214.
* Tirole, J. (1992), "Collusion and the Theory of Organizations", Advances in Economic Theory: Proceedings of the Sixth World Congress of the Econometric Society, ed by J.-J. Laffont. Cambridge: Cambridge University Press, vol.2:151-206.

### References

1. ↑ O'Sullivan, Arthur; Sheffrin, Steven M. (2003). Economics: Principles in Action. Upper Saddle River, New Jersey: Pearson Prentice Hall. pp. 171. ISBN 0-13-063085-3. https://archive.org/details/economicsprincip00osul.
2. ↑ Collusion Law & Legal Definition
3. ↑ Collusion [1]. .
4. ↑ 4.0 4.1 "OECD Glossary of Statistical Terms - Collusion Definition". https://stats.oecd.org/glossary/detail.asp?ID=3159.
5. ↑ Garrod, & Olczak, M. (2018). Explicit vs tacit collusion: The effects of firm numbers and asymmetries. International Journal of Industrial Organization, 56, 1–25. https://doi.org/10.1016/j.ijindorg.2017.10.006
6. ↑ Fonseca, Miguel A.; Normann, Hans-Theo (2012-11-01). "Explicit vs. tacit collusion—The impact of communication in oligopoly experiments" (in en). European Economic Review 56 (8): 1759–1772. doi:10.1016/j.euroecorev.2012.09.002. ISSN 0014-2921. https://www.sciencedirect.com/science/article/pii/S0014292112001237.
7. ↑ "A Critique of Political Economy". https://www.marxists.org/archive/marx/works/download/pdf/Capital-Volume-I.pdf.
8. ↑ McConnell, Doug. "Ethics of the GameStop Short Squeeze". University of Oxford. http://blog.practicalethics.ox.ac.uk/2021/02/ethics-of-the-gamestop-short-squeeze/.
9. ↑ PricewaterhouseCoopers. "The telecom price wars continue to rage in the global wireless industry". https://www.strategyand.pwc.com/gx/en/about/media/press-releases/telco-price-wars-continue.html.
10. ↑ Levenstein, & Suslow, V. Y. (2006). What Determines Cartel Success? Journal of Economic Literature, 44(1), 43–95. https://doi.org/10.1257/002205106776162681
11. ↑ Compte et al., 2002. Olivier Compte, Frederic Jenny, Patrick Rey Capacity, constraints, mergers and collusion European Economic Review, 46 (2002), pp. 1-29
12. ↑ 12.0 12.1 Kalai, Ehud; Satterthwaite, Mark A. (1994). "The Kinked Demand Curve, Facilitating Practices, and Oligopolistic Coordination". in Gilles, Robert P.; Ruys, Pieter H. M. (in en). Imperfections and Behavior in Economic Organizations. Theory and Decision Library. Dordrecht: Springer Netherlands. pp. 15–38. doi:10.1007/978-94-011-1370-0_2. ISBN 978-94-011-1370-0.
13. ↑ 13.0 13.1 13.2 13.3 Roberts, Kevin (1987). "Collusion". The New Palgrave Dictionary of Economics. pp. 1–5. doi:10.1057/978-1-349-95121-5_22-1. ISBN 978-1-349-95121-5.
14. ↑ Conley, Timothy; Decarolis, Francesco (2016). "Detecting Bidders Groups in Collusive Auctions". American Economic Journal: Microeconomics 8 (2): 1–38. doi:10.1257/mic.20130254.
15. ↑ 15.0 15.1 Carbone, Carlotta; Calderoni, Francesco; Jofre, Maria (2024). "Bid-rigging in public procurement: cartel strategies and bidding patterns". Crime, Law and Social Change 82 (2): 249–281. doi:10.1007/s10611-024-10142-0. ISSN 0925-4994. https://link.springer.com/content/pdf/10.1007/s10611-024-10142-0.pdf. Retrieved 17 June 2025.
16. ↑ 16.0 16.1 Sorenson. (2007). Credible collusion in multimarket oligopoly. Managerial and Decision Economics, 28(2), 115–128. https://doi.org/10.1002/mde.1314
17. ↑ Morgan, Eleanor J. (2009). "Controlling cartels – Implications of the EU policy reforms" (in en). European Management Journal 27 (1): 1–12. doi:10.1016/j.emj.2008.04.006. ISSN 0263-2373. http://www.sciencedirect.com/science/article/pii/S0263237308000443.
18. ↑ Brenner, Steffen (2009). "An empirical study of the European corporate leniency program" (in en). International Journal of Industrial Organization 27 (6): 639–645. doi:10.1016/j.ijindorg.2009.02.007. ISSN 0167-7187. http://www.sciencedirect.com/science/article/pii/S0167718709000290.
19. ↑ Heywood, Li, D., & Ye, G. (2020). Does price discrimination make collusion less likely? a delivered pricing model. Journal of Economics (Vienna, Austria), 131(1), 39–60. https://doi.org/10.1007/s00712-020-00699-4
20. ↑ Salinger, Lawrence M. (2005). Encyclopedia of white-collar & corporate crime. ISBN 978-0-7619-3004-4. https://books.google.com/books?id=0f7yTNb_V3QC&q=market+division+collusion+heavy+electrical+equipment++1960&pg=PA377.
21. ↑ Hunter-Gault, Charlayne (October 15, 1996). "ADM: Who's Next?". MacNeil/Lehrer Newshour (PBS). [2] . Retrieved on 2007-10-17.
22. ↑ "Collusion Strategy and Analysis for Texas Hold'em by T. Hayes" (in en). https://www.lybrary.com/collusion-strategy-and-analysis-for-texas-holdem-p-922246.html.
23. ↑ Sullivan, Christopher John. Three Essays on Product Collusion. Diss. University of Michigan, 2016. https://deepblue.lib.umich.edu/bitstream/handle/2027.42/138544/sullivcj_1.pdf?sequence=1&isAllowed=y
24. ↑ "A Critique of Political Economy". 24 April 2014. https://www.theguardian.com/technology/2014/apr/24/apple-google-settle-antitrust-lawsuit-hiring-collusion.
25. ↑ 25.0 25.1 "Google's three antitrust battles: Here's what you need to know" (in en). https://www.cnet.com/tech/tech-industry/googles-three-antitrust-battles-heres-what-you-need-to-know-faq/.
26. ↑ "European Commission finds German automakers illegally colluded on emissions technology". https://www.dw.com/en/european-commission-finds-german-automakers-illegally-colluded-on-emissions-technology/a-48218578.
27. ↑ "K-Line convicted of criminal cartel conduct and fined $34.5 million" (in English). 2019-08-02. https://www.accc.gov.au/media-release/k-line-convicted-of-criminal-cartel-conduct-and-fined-345-million.
28. ↑ "14-296MR Former CEO and two Melbourne men jailed following theft of millions from Phosphagenics Limited" (in en). https://asic.gov.au/about-asic/news-centre/find-a-media-release/2014-releases/14-296mr-former-ceo-and-two-melbourne-men-jailed-following-theft-of-millions-from-phosphagenics-limited/.
29. ↑ "Combating collusion - Cartels, Monopolies - Australia". https://www.mondaq.com/australia/cartels-monopolies/493088/combating-collusion.
30. ↑ Park, Sangwon (2014). "The effect of leniency programs on endogenous collusion" (in en). Economics Letters 122 (2): 326–330. doi:10.1016/j.econlet.2013.12.014. https://ideas.repec.org//a/eee/ecolet/v122y2014i2p326-330.html.
31. ↑ Emons, Winand (2020-05-01). "The effectiveness of leniency programs when firms choose the degree of collusion" (in en). International Journal of Industrial Organization 70. doi:10.1016/j.ijindorg.2020.102619. ISSN 0167-7187. https://www.sciencedirect.com/science/article/pii/S0167718720300424.
32. ↑ 32.0 32.1 Asch, Peter; Seneca, Joseph J. (1975). "Characteristics of Collusive Firms". The Journal of Industrial Economics 23 (3): 223–237. doi:10.2307/2097944. ISSN 0022-1821.
33. ↑ Harrington, J. (2015). Some Thoughts on Why Certain Markets are More Susceptible to Collusion.
34. ↑ Phlips, Louis, ed (1995). "Excess capacity and collusion". Competition Policy: A Game-Theoretic Perspective. Cambridge: Cambridge University Press. pp. 151–172. doi:10.1017/CBO9780511522055.010. ISBN 978-0-521-49871-5. https://www.cambridge.org/core/books/competition-policy/excess-capacity-and-collusion/97E07C97D1DD8ED8486503D6F4E74B62. Retrieved 2023-04-04.
35. ↑ Pettinger, Tejvan (July 2020). "Government policies to reduce collusion". https://www.economicshelp.org/blog/164535/economics/government-policies-to-reduce-collusion/.

* v
* t
* e

Topics in game theory

Definitions|

* Cooperative game
* Determinacy
* Escalation of commitment
* Extensive-form game
* First-player and second-player win
* Game complexity
* Graphical game
* Hierarchy of beliefs
* Information set
* Normal-form game
* Preference
* Sequential game
* Simultaneous game
* Simultaneous action selection
* Solved game
* Succinct game

Equilibrium
concepts|

* Nash equilibrium
* Subgame perfection
* Mertens-stable equilibrium
* Bayesian Nash equilibrium
* Perfect Bayesian equilibrium
* Trembling hand
* Proper equilibrium
* Epsilon-equilibrium
* Correlated equilibrium
* Sequential equilibrium
* Quasi-perfect equilibrium
* Evolutionarily stable strategy
* Risk dominance
* Core
* Shapley value
* Pareto efficiency
* Gibbs equilibrium
* Quantal response equilibrium
* Self-confirming equilibrium
* Strong Nash equilibrium
* Markov perfect equilibrium

Strategies|

* Dominant strategies
* Pure strategy
* Mixed strategy
* Strategy-stealing argument
* Tit for tat
* Grim trigger
* Collusion
* Backward induction
* Forward induction
* Markov strategy

Classes
of games|

* Symmetric game
* Perfect information
* Repeated game
* Signaling game
* Screening game
* Cheap talk
* Zero-sum game
* Mechanism design
* Bargaining problem
* Stochastic game
* n-player game
* Large Poisson game
* Nontransitive game
* Global game
* Strictly determined game
* Potential game

Games|

* Go
* Chess
* Infinite chess
* Checkers
* Tic-tac-toe
* Prisoner's dilemma
* Optional prisoner's dilemma
* Traveler's dilemma
* Coordination game
* Chicken
* Centipede game
* Volunteer's dilemma
* Dollar auction
* Battle of the sexes
* Stag hunt
* Matching pennies
* Ultimatum game
* Rock paper scissors
* Pirate game
* Dictator game
* Public goods game
* Blotto game
* War of attrition
* El Farol Bar problem
* Fair division
* Fair cake-cutting
* Cournot game
* Deadlock
* Diner's dilemma
* Guess 2/3 of the average
* Kuhn poker
* Nash bargaining game
* Prisoners and hats puzzle
* Trust game
* Princess and Monster game
* Rendezvous problem

Theorems|

* Arrow's impossibility theorem
* Aumann's agreement theorem
* Folk theorem
* Minimax theorem
* Nash's theorem
* Purification theorem
* Revelation principle
* Zermelo's theorem

Key
figures|

* Albert W. Tucker
* Amos Tversky
* Ariel Rubinstein
* Claude Shannon
* Daniel Kahneman
* David K. Levine
* David M. Kreps
* Donald B. Gillies
* Drew Fudenberg
* Eric Maskin
* Harold W. Kuhn
* Herbert Simon
* Hervé Moulin
* Jean Tirole
* Jean-François Mertens
* Jennifer Tour Chayes
* John Harsanyi
* John Maynard Smith
* Antoine Augustin Cournot
* John Nash
* John von Neumann
* Kenneth Arrow
* Kenneth Binmore
* Leonid Hurwicz
* Lloyd Shapley
* Melvin Dresher
* Merrill M. Flood
* Olga Bondareva
* Oskar Morgenstern
* Paul Milgrom
* Peyton Young
* Reinhard Selten
* Robert Axelrod
* Robert Aumann
* Robert B. Wilson
* Roger Myerson
* Samuel Bowles
* Suzanne Scotchmer
* Thomas Schelling
* William Vickrey

See also|

* All-pay auction
* Alpha–beta pruning
* Bertrand paradox
* Bounded rationality
* Combinatorial game theory
* Confrontation analysis
* Coopetition
* First-move advantage in chess
* Game mechanics
* Glossary of game theory
* List of game theorists
* List of games in game theory
* No-win situation
* Solving chess
* Topological game
* Tragedy of the commons
* Tyranny of small decisions

* v
* t
* e

Corruption

Corruption in different fields|

* Corporate crime
* Corruption in local government
* Interest group corruption
* Police corruption
* Political corruption

Measures of corruption|

* Corruption Perceptions Index
* Economics of corruption

Forms or aspects
of corruption|

| General|

* Baksheesh
* Black market
* Bribery
* Collusion
* Commercial bribery
* Confidence trick
* Embezzlement
* Extortion
* Fraud
* Graft (politics)
* Honest services fraud
* Kickback
* Match fixing
* Money laundering
* Noble cause corruption
* Professional courtesy
* Slush fund
* Tax evasion
* Tax haven

|

State|

* Clientelism
* Coronelism
* Crony capitalism
* Cronyism
* Elite capture
* Failed state
* Kleptocracy
* Mafia state
* Nepotism
* Plutocracy
* Political scandal
* Regulatory capture
* State capture
* State crime

Elections|

* Ballot stuffing
* Electoral fraud
* Election security
* Gerrymandering
* Vote pairing
* Vote suppression

Institutions dealing
with corruption|

| International|

* Global Financial Integrity
* Global Witness
* Group of States Against Corruption
* International Anti-Corruption Academy
* Mo Ibrahim Foundation
* Transparency International
* UNCAC Coalition of Civil Society Organisations

|

National|

* Oficina Anticorrupción (Argentina)
* Australian Criminal Intelligence Commission
* Anti Corruption Commission (Bangladesh)
* Anti-corruption and Economic Malpractice Observatory (Burundi)
* National Anti-Corruption Observatory (Cameroon)
* National Bureau of Corruption Prevention (China)
* Independent Commission Against Corruption (Hong Kong)
* Commission Against Corruption (Macau)
* USKOK (Croatia)
* Fiji Independent Commission Against Corruption
* Central Vigilance Commission (India)
* Corruption Eradication Commission (Indonesia)
* Corruption Prevention and Combating Bureau (Latvia)
* Governance and Economic Management Assistance Program (Liberia)
* Special Investigation Service of the Republic of Lithuania
* BIANCO (Madagascar)
* Malaysian Anti-Corruption Commission
* Anti-Corruption Commission of Myanmar (Myanmar)
* Independent Corrupt Practices Commission (Nigeria)
* Investigation Task Force Sweep (Papua New Guinea)
* Central Anticorruption Bureau (Poland)
* Direcţia Generală Anticorupţie (Romania)
* Direcţia Naţională Anticorupţie (Romania)
* Anti-Corruption Foundation (Russia)
* Sierra Leone Anti-corruption Commission
* Corrupt Practices Investigation Bureau (Singapore)
* Commission for the Prevention of Corruption of the Republic of Slovenia
* Anti-Corruption and Civil Rights Commission (South Korea)
* Servicio de Vigilancia Aduanera (Spain)
* National Anti-Corruption Bureau of Ukraine (Ukraine)
* Warioba Commission (Tanzania)

Anti-corruption|

| Laws and
enforcement|

* Citizen's Charter and Grievance Redressal Bill 2011 (pending)
* Foreign Corrupt Practices Act
* Freedom of information laws by country
* The Lokpal and Lokayuktas Act, 2013
* UK Bribery Act of 2010
* Whistleblower protection

|

International
instruments
and efforts|

* Inter-American Convention Against Corruption
* International asset recovery
* International Association of Anti-Corruption Authorities
* OECD Anti-Bribery Convention
* United Nations Convention against Corruption

Protest
movements|

* 2011 Azerbaijani protests
* 2011 Indian anti-corruption movement
* 2012 Indian anti-corruption movement
* Anti-austerity movement in Spain
* Mexican Indignados Movement
* Russian anti-corruption campaign
* Yo Soy 132
* 2017–2018 Romanian protests
* 2017–2018 Russian protests

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Collusion. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Collusion&oldid=4350657"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template