Examlex
In creating his intelligence test for children, Alfred Binet made the assumptions that mental abilities develop with age and that the rate at which mental competence is gained is relatively constant over time.
Public Good
A good that is non-excludable and non-rivalrous, meaning it can be used by everyone and one person's use does not reduce its availability to others.
Marginal Costs
The increase in total cost that arises from producing one additional unit of a good or service.
Marginal Benefits
The additional satisfaction or utility a consumer receives from consuming one more unit of a good or service.
Net Benefit
The total benefits of a decision or action minus the total costs associated with that decision or action.
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