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 Regulated Market is a multilateral system, (as defined by MiFID), which brings together or facilitates the bringing together of multiple third-party buying and selling interests in financial instruments in a way that results in a contract. For example, the London Stock Exchange (LSE).