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.
Competition and Market Structures. Perfect Competition. A market structure characterized by a large number of well-informed, independent buyers and sellers who exchange identical products. The Los Angeles Farmer's Market. Farmerâs Markets sell the same products at very identical prices, usually the same.