In 1866 What Did the British Physician Langdon Down Describe

question 105

Multiple Choice

In 1866 what did the British physician Langdon Down describe for the first time?

• A) characteristics of autism.
• B) a subgroup of mental retardation.
• C) the case of the "wild boy of Aveyron."
• D) the condition of pervasive developmental disorder.

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Definitions:

Economic Decisions

Choices made by individuals, businesses, or governments regarding the allocation of scarce resources to satisfy needs and desires.

Excess Burden

The loss of economic efficiency that occurs when a tax or government policy distorts consumer behavior or market outcomes, leading to a decrease in total welfare.

Tax Revenue

The financial gains obtained by governments from tax collection.

Deadweight Loss

A loss of economic efficiency that can occur when the equilibrium for a good or a service is not achieved or is unachievable.