Discuss the effects on efficient behavior of different liability rules, including comparative

negligence. Include in your discussion an analysis of the efficiency of the various rules and discuss
the differing costs of administering the rules.

Your questions are as much about law as economics; and at a fairly high level at that. Further, you are asking for a multi-page essay/paper rather than succient answers. While we, the Jiskha volunteers, can generally critique your answers, I don't think anybody has the composite background to answer your questions at the level you seem to need.

To discuss the effects of different liability rules on efficient behavior, including comparative negligence, let's start by understanding the concept of liability rules and comparative negligence.

Liability rules determine how legal responsibility is allocated when harm or damage occurs. They provide a framework for determining who should be held accountable and responsible for compensating the injured party. Different liability rules can have varying effects on efficient behavior.

1. Strict Liability: Under strict liability, a party is held liable for damages regardless of their level of negligence. This rule encourages caution and care in order to avoid liability. It shifts the burden of risk to the party causing harm, thus incentivizing them to engage in preventive measures. Strict liability can promote efficient behavior by ensuring that potential harm is minimized.

2. Negligence Liability: Negligence liability holds a party accountable if they fail to meet a reasonable standard of care. It requires proving that the defendant acted negligently, meaning they did not exercise the level of care that a reasonably prudent person would in similar circumstances. Negligence liability incentivizes individuals to take reasonable precautions and acts as a deterrent against careless behavior.

3. Comparative Negligence: Comparative negligence is a legal concept that modifies the liability rule by apportioning damages proportionally to each party's degree of fault. In a comparative negligence system, both the plaintiff and the defendant's negligence are considered, and the damages awarded are reduced accordingly. This rule aims to promote fairness by assigning responsibility based on each party's level of fault. It can encourage individuals to act more responsibly than they would under strict liability or traditional negligence rules.

Efficiency of Liability Rules:
- Strict liability can drive efficiency by placing the burden of risk on the party causing the harm. It encourages individuals to invest in safety measures and take preventive actions, as they are directly responsible for any damages caused.
- Negligence liability can promote efficiency by incentivizing individuals to act with reasonable care. The threat of being held accountable for negligence encourages people to take precautions and minimize risks.
- Comparative negligence can enhance efficiency by sharing the responsibility and the costs of damages between parties. It acknowledges that multiple parties may contribute to an incident and avoids placing all liability on one party. This reduces the potential for overly cautious behavior and may lead to fairer outcomes.

Cost of Administering Rules:
The costs associated with administering liability rules vary depending on their complexity and the burden of proof required. Strict liability may require fewer resources to establish liability, while negligence liability typically requires a thorough investigation and proof of negligence. Comparative negligence involves assessing the degree of fault for each party involved, which can be complex and time-consuming, leading to potentially higher administrative costs.

In conclusion, liability rules, including strict liability, negligence liability, and comparative negligence, have varying effects on efficient behavior. They address accountability, incentivize responsible actions, and allocate responsibility based on fault. The costs of administering these rules differ based on the intricacies of each rule.