Discusses the use of cognitive explanations in attempting to account for linguistic regularities in language acquisition. Theories are discussed concerning first and second language acquisition. The developmental theory of Piaget is outlined along with its application to the cognitive theories of language acquisition. (PJM)

Introduces the notion of a "discourse world," that is, a set of elements against the background of which a unit of talk makes sense, and claims that several discourse worlds coexist in classroom discourse. The notion is interpreted in terms of frame theory and applied to classroom language learning. (SED)

Investigates the influence of formal instruction on natural second language acquisition processes by an experiment in which investigators tried to force other than "natural" learning processes in learners' natural acquisition of a second language. The informants in the experiment were ten Italian children attending elementary school in Munich.…

Argues for the studying of the language learning process itself, rather than doing contrastive or error analyses for determining the source of error in second language acquisiton. Longitudinal and cross-sectional studies can help determine the language learning stages. A multidimensional model of language learning is proposed. (PJM)