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.
ADVERTISEMENTS: Perfect Competition: Meaning, Assumptions and Other Details! Perfect competition refers to a market situation in which there are large number of buyers and sellers of homogeneous products. The price of the product is determined by industry with the forces of demand and supply. For instance, if you require pen, there should be several shops selling pens.