Reviews the notions of system and variability as applied to interlanguages, especially with respect to variability in the syntax of second language learners. Summarizes the findings of Huebner with respect to referentiality and then examines some new data collected 20 months after the end of the initial study. (SED)

Examines the central characteristics of interlanguages that distinguish them from all other natural language systems. It is proposed that, since permeability presupposes an interlanguage norm which is relatively stable, we are forced to gather enough data to establish the overall level of linguistic competence of the learner. (Author/POP)

Six tentative conclusions about the role of extrinsic feedback in interlanguage fossilization are presented and discussed in light of hypotheses made by Virgil and Oller regarding this phenomenon. Extrinsic factors are those characteristics of the learner which are oriented toward the environment and which act as the interface between the learner…

A cybernetic model of factors involved in the fossilization of grammatical and lexical forms in learner grammars is offered. A distinction is made between affective and cognitive dimensions of a multidimensional channel of human communication; and the effect of expected and unexpected feedback on these two dimensions is discussed. (Author/POP)

Answers to theoretical questions about the place of input in a formal second language acquisition model are dependent on a distinction between two kinds of learner hypotheses. Type-N hypotheses require "negative evidence" for testing, while Type-P hypotheses are tested on the basis of "positive data" alone. (Author/CB)

Presents arguments for the view that pidginization can be a model of early second language acquisition, decreolization can be a model for later second language acquisition, and creolization is inappropriate for any aspect of this process. (Author/AM)

A study of certain aspects of second language learning among three university students, all in an advanced ESL class at UCLA. An error analysis of written verb forms was undertaken. An examination of correction revealed that it was neither systematic nor enlightened enough to actually influence error production. (Author/RM)

This article reports major findings of a longitudinal, naturalistic study of the acquisition of English as a second language by a five-year-old Japanese girl. The emphasis is on empirical findings rather than on any particular theoretical orientation. (Author/POP)

Data on Dutch-Turkish language-mixing behavior of Turkish children growing up in The Netherlands are presented and analyzed. While functional characteristics of the children's language-mixing were compatible with models from earlier research, structural analysis suggests no universality of surface structure constraint rules for sentence-internal…