Research Findings About the Etiology of Learning Disorders Are Inconclusive,but

question 26

Multiple Choice

Research findings about the etiology of learning disorders are inconclusive,but according to the text it is generally believed that

• A)psychological causes may be implicated.
• B)biological causes may be implicated.
• C)neither biological nor psychological causes are likely to be implicated.
• D)biological causes may be implicated,but secondary to psychological causes.
• E)both biological and psychological causes may be implicated.

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Definitions:

Marginal Revenue

The additional revenue that a firm receives from selling one more unit of a product or service.

Marginal Cost

The extra financial burden of manufacturing an additional unit of a product or service.

Price Takers

Firms or individuals who accept the market price as given and have no power to influence that price due to the competitive nature of the market.

Marginal Revenue

The additional income received from selling one more unit of a product or service.