Asymmetric Info: Study Notes

Asymmetric Information in Healthcare

Overview of Asymmetric Information

  • Asymmetric information refers to a situation in an economic transaction where one party has less information than the other.

Key Issues Associated with Asymmetric Information in Healthcare

  • Adverse Selection

    • Defined as the situation where one party, typically the insurer, possesses more information than the other party, typically the insured, allowing the informed party to exploit their advantage.

  • Principal-Agent Problem

    • This issue arises when agents (e.g., doctors) pursue their own interests instead of the interests of the principals (e.g., patients or insurance companies).

  • Moral Hazard

    • It occurs when one party engages in risky behavior while being insulated from the consequences, often due to protection from the other party.

Adverse Selection in the Health Insurance Market

  • Definition: Adverse selection occurs when individuals with higher risks, such as older adults or those with chronic illnesses, are more likely to purchase insurance compared to low-risk individuals, such as young and healthy people.

  • Consequences:

    • High-risk individuals are eager to buy insurance while low-risk individuals are not. This skew leads to increased premiums, causing even more low-risk individuals to drop out.

    • This phenomenon is termed a "death spiral" as it can ultimately result in no one taking out insurance.

  • Underwriting: To combat adverse selection, insurers conduct underwriting, which involves assessing the risks individual consumers present to set insurance premiums accordingly.

  • Government Intervention: Governments may step in to subsidize insurance or mandate its purchase to mitigate adverse selection effects.

Dealing with Adverse Selection

  • Mechanisms to reduce adverse selection include:

    • Employment-Sponsored Medical Insurance: Insurance provided by employers helps balance risk pools.

    • Mandating Coverage: Legislative measures, such as the Affordable Care Act (ACA), require individuals to buy health insurance and restrict the exclusion of pre-existing conditions.

Principal-Agent Problem

  • Definition: The principal-agent problem arises when an agent pursues their own interests rather than those of the principal who hired them. Asymmetric information limits the principal's ability to monitor the agent's actions adequately.

  • Example:

    • Shareholders (principals) vs. managers (agents): Shareholders may not have complete visibility into the manager's performance.

Principal-Agent Problem in Healthcare

  • Delegation of Decision-Making: Insurance companies delegate decision-making to doctors, which may lead to interests misaligned with those of both the insurance firm and the patient.

  • Patient-Provider Relationship:

    • Patients (principals) cannot directly observe the actions of doctors and insurers (agents), which may create incentives for providers that do not prioritize patient health.

    • Medical professionals may be more focused on legal protection (e.g., malpractice) rather than patient outcomes.

Example of Principal-Agent Problem

  • Refer to the article on the Michigan cancer doctor:

    • Assignment Questions:

    • Who is the principal?

    • Who is the agent?

    • What problem is illustrated?

    • Suggested remedies?

    • Role of incentives and how they can be modified?

Opportunism

  • Definition: Opportunism is the act of taking advantage of situations in a way that disregards the interests of others.

Addressing Opportunism

  • Mechanisms include:

    • Aligning Interests and Incentives: Partnering parties should synchronize their goals.

    • Monitoring the Agent's Behavior: Keeping a check on agents, while costly, helps prevent opportunism.

    • Relationships with Proven Trust: Building a history of trustworthy interactions can deter opportunism.

    • Regulation: Implementing macro-level regulations can deter opportunistic behavior but may be ineffective if opportunism is hidden.

    • Signaling: Agents can utilize signaling to convey credibility and quality through methods that are hard to counterfeit.

Moral Hazard in Economic Terms

  • Definition: Moral hazard arises when one party knowingly takes risks because the cost will be borne by another party.

  • Examples:

    • Government bailouts of corporations viewed as 'too big to fail'.

    • Drivers with insurance may drive recklessly compared to those without.

  • Impact: This behavior can lead to inefficient resource allocation, where one party imposes costs on another, potentially leading to macroeconomic issues.

Moral Hazard in Health Insurance

  • Consequences of Moral Hazard:

    • Increased use of healthcare services without a full cost burden leads to unnecessary doctor visits, risky behaviors, and excessive treatments, increasing overall costs to society without corresponding benefits.

Coping with Moral Hazard in Healthcare

  • Strategies:

    • Deductibles: Patients pay a portion of treatment costs before insurance kicks in.

    • Coinsurance: Patients pay a percentage of the treatment costs, incentivizing them to evaluate necessity.

    • Outcomes-based Payment: Aligning physician payment with patient health outcomes to deter unnecessary treatments.

Milton Friedman's Four Categories of Spending

  1. You spend your own money on yourself.

  2. You spend your own money on someone else.

  3. You spend someone else's money on yourself.

  4. You spend someone else's money on someone else.

Implications of Spending Categories

  • Third Party Payments: Roughly 88% of healthcare transactions in the U.S. are covered by third-party payments, affecting individual spending behavior and resources allocation.