Knowra Information economics Information economics Information economics studies how information is produced, acquired, distributed, and used in markets and decision-making, especially when people hold different information or face uncertainty.
Adverse selection : A market failure in which hidden information about quality leads to disproportionate participation by lower-quality options. Unobserved quality can drive high-quality sellers or buyers out of a market.
Asymmetric information : A situation in which parties to an interaction possess different information relevant to its outcome. Unequal knowledge is the central condition behind many information-economics problems.
Auction theory : The study of how auction rules affect bidding, revenue, and the allocation of goods. Bidders often hold private values or estimates, making information central to auction design.
George Akerlof : An American economist whose work on quality uncertainty and markets earned the 2001 Nobel Memorial Prize in Economic Sciences. His 1970 paper used used cars to show how asymmetric information can shrink trade.
Perfect competition : A market structure with many buyers and sellers, homogeneous goods, free entry, and price-taking behavior. Its benchmark models often abstract from private information that complicates actual exchange.
Moral hazard : A change in behavior after an agreement when one party bears less than the full cost of its actions. Hidden actions after contracting make insurance and lending incentives difficult to design.
Information asymmetry : A difference in relevant knowledge between parties to a transaction or decision. This closely related label emphasizes the imbalance that generates strategic market problems.
Insurance economics : The study of insurance markets, contracts, and incentives under risk and imperfect information. Insurers use premiums, deductibles, and screening to address hidden risk and behavior.
Michael Spence : An American economist known for analyzing how informed people signal their qualities to less-informed parties. His education model showed how a costly choice can convey information without increasing productivity.
General equilibrium theory : A framework that studies prices and allocations across interconnected markets when supply equals demand. Classical formulations often assume complete information, unlike models centered on informational limits.
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