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 perfectly competitive industry will produce the quantity of output and charge the price at the equilibrium point where the ind ustry MC curve intersects the demand curve. A monopoly will produce the quantity of output dictated by the intersection of the MR and MC curves, charging a price set by the demand curve.