QCM : Classifying and Managing Public Goods — 9 questions

Explication

Optimal provision of a public good is achieved where Marginal Social Benefit (MSB) equals Marginal Cost (MC). At this point, societal welfare is maximized because the value derived from consuming an additional unit equals the cost of producing it. Providing less or more would lead to under- or over-provisioning, respectively.

Explication

Public goods are both non-excludable and non-rival, meaning no one can be prevented from using them, and one person's use does not diminish another's.

Explication

Common resources are rival, meaning one person's use decreases availability for others, but non-excludable, meaning it is difficult to prevent people from using them. This often leads to overuse or depletion, known as the 'Tragedy of the Commons', since individuals may overuse the resource without considering the collective impact.

Explication

The free rider problem occurs because individuals can benefit from public goods without paying, leading to potential under-provision.

Explication

A public good is defined as a good that is non-rival and non-excludable. This means consumption by one individual does not reduce availability to others, and it is impossible to prevent anyone from using the good. Examples include national defense and street lighting.

Explication

Club goods are excludable (you can prevent access) but non-rival, such as cable TV.

Explication

Fish stocks are rival (overfishing reduces availability) but non-excludable, classifying them as common resources.

Explication

The optimal level occurs when MSB equals MC, balancing societal benefits with costs.

Explication

Cost-benefit analysis sums all benefits and costs to decide if societal net benefit justifies provision.