information asymmetry

In economics, information asymmetry occurs when one party in a transaction possesses more or better information than the other. This imbalance can lead to market inefficiencies and unfair outcomes.12

In the insurance industry, adverse selection is a key consequence. Individuals with higher personal risk factors may be more likely to purchase insurance, knowing they will likely file more claims than the average person. Insurers, lacking this private knowledge, may set premiums based on general population risks. If too many high-risk individuals join, insurers face higher claim costs, potentially leading to a "death spiral" where premiums rise, driving away low-risk individuals and further increasing costs.1

Information economics, pioneered by George Akerlof, highlights how such information gaps can create "missing markets" where transactions that would be mutually beneficial fail to occur because one party cannot accurately assess the quality or risk involved. This concept is crucial for understanding markets ranging from used cars to financial securities.34