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.
A competitive market is one that has multiple buyers and sellers.  This means there is no single vendor or consumer who has absolute  control over the price in the market. Iâ¦n such a market, businesses  openly compete for market share. 3 people found this useful.