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 is a market structure characterised by a complete absence of rivalry among the individual firms.â According to R.G. Lipsey, âPerfect competition is a market structure in which all firms in an industry are price- takers and in which there is freedom of entry into, and exit from, industry.â Characteristics of Perfect Competition: