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 competition. Definition. A market characterized by a large number of independent sellers of standardized products, free flow of information, and free entry and exit. Each seller is a price taker rather than a price maker. Use pure competition in a sentence.