Specific language impairment (SLI) is diagnosed when a child's language does not develop normally and the difficulties cannot be accounted for by generally slow development, physical abnormality of the speech apparatus, autism spectrum disorder, acquired brain damage or hearing loss.
Perfect competition. A perfectly competitive market is a hypothetical market where competition is at its greatest possible level. Neo-classical economists argued that perfect competition would produce the best possible outcomes for consumers, and society.
Pure monopoly is a type of market characterized by. - a single seller or producer, - a unique product, with no close substitute, - the ability of the seller to ask any price it wishes, - entry to the industry completely blocked by legal, technological or economic barriers, and.