Tit For Tat

AAA

DEFINITION of 'Tit For Tat'

A game-theory mechanism which is subject to a payoff matrix similar to that of a prisoner's dilemma. Tit for tat was introduced by Robert Axelrod, who developed a strategy where each participant in an iterated prisoner's dilemma will follow a course of action which is consistent with their opponent's previous turn. For example, if provoked, a player will subsequently respond with retaliation, but if they are not provoked, the player will subsequently cooperate.

INVESTOPEDIA EXPLAINS 'Tit For Tat'

Tit-for-tat strategies are based on the concepts of retaliation and altruism. When faced with a prisoner's dilemma-like scenario, an individual will cooperate when the other member has an immediate history of cooperating and will default when the counterparty previously defaulted.
This concept is often applied to economics and biology.

RELATED TERMS
  1. Zero-Sum Game

    A situation in which one person’s gain is equivalent to another’s ...
  2. Iterated Prisoner's Dilemma

    A normal prisoner's dilemma played repeatedly by the same participants. ...
  3. Pareto Efficiency

    An economic state where resources are allocated in the most efficient ...
  4. Diner's Dilemma

    A game-theory situation with several players. Similar to a prisoner's ...
  5. Prisoner's Dilemma

    A paradox in decision analysis in which two individuals acting ...
  6. Behavioral Finance

    A field of finance that proposes psychology-based theories to ...
RELATED FAQS
  1. What is the relationship between research and development and innovation?

    Although it's possible to achieve innovation without research and development and it's possible to conduct research and development ... Read Full Answer >>
  2. How is minimum transfer price calculated?

    A company that transfers goods between multiple divisions needs to establish a transfer price so that each division can track ... Read Full Answer >>
  3. How does neoclassical economics relate to neoliberalism?

    While it may be likely that many neoliberal thinkers endorse the use of (or even emphasize) neoclassical economics, the two ... Read Full Answer >>
  4. In what manner will a recession likely affect the marginal-propensity-to-save rate ...

    The marginal propensity to save, or MPS, rises in most, though not all, recessions. This makes perfect sense on an individual ... Read Full Answer >>
  5. Why would a country's gross domestic product (GDP) and gross national income (GNI) ...

    A country’s gross domestic product, or GDP, and gross national income, or GNI, are likely to differ considerably because ... Read Full Answer >>
  6. While closely related, how do gross domestic product (GDP) and gross national income ...

    Gross domestic product, or GDP, and gross national income, or GNI, are the two most important economic indicators that measure ... Read Full Answer >>
Related Articles
  1. Active Trading Fundamentals

    Understanding Investor Behavior

    Discover how some strange human tendencies can play out in the market, posing the question: are we really rational?
  2. Active Trading Fundamentals

    An Introduction To Consensus Indicators

    Learn how the herd is almost always wrong, or at least late in jumping on the bandwagon.
  3. Options & Futures

    Game Theory: Beyond The Basics

    Take your game theory knowledge to the next level by learning about simultaneous games and the Nash Equilibrium.
  4. Fundamental Analysis

    The Basics Of Game Theory

    Break down and examine the potential consequences of economic/financial scenarios.
  5. Active Trading Fundamentals

    Behavioral Finance

    Learn the science behind irrational decision making and how you can avoid it.
  6. Economics

    What is a Resident Alien?

    A resident alien is a foreigner who is a permanent resident of the country in which he or she resides but does not have citizenship.
  7. Economics

    Explaining Protectionism

    Protectionism is government measures that limit imports into a country to protect commerce within that country against foreign competition.
  8. Fundamental Analysis

    Understanding the Profitability Index

    The profitability index (PI) is a modification of the net present value method of assessing an investment’s attractiveness.
  9. Economics

    What is Neoliberalism?

    Neoliberalism is a little-used term to describe an economy where the government has few, if any, controls on economic factors.
  10. Economics

    Understanding Natural Unemployment

    Natural unemployment is often defined as the lowest rate of unemployment an economy will reach.

You May Also Like

Hot Definitions
  1. American Dream

    The belief that anyone, regardless of where they were born or what class they were born into, can attain their own version ...
  2. Multicurrency Note Facility

    A credit facility that finances short- to medium-term Euro notes. Multicurrency note facilities are denominated in many currencies. ...
  3. National Currency

    The currency or legal tender issued by a nation's central bank or monetary authority. The national currency of a nation is ...
  4. Treasury Yield

    The return on investment, expressed as a percentage, on the debt obligations of the U.S. government. Treasuries are considered ...
  5. Bund

    A bond issued by Germany's federal government, or the German word for "bond." Bunds are the German equivalent of U.S. Treasury ...
  6. European Central Bank - ECB

    The central bank responsible for the monetary system of the European Union (EU) and the euro currency. The bank was formed ...
Trading Center
×

You are using adblocking software

Want access to all of Investopedia? Add us to your “whitelist”
so you'll never miss a feature!