Considers the acquisition of native language and foreign language as complementary aspects of one basic cognitive-affective schema, interacting and conflicting with each other in a variety of ways. In addition, an illumination of the psychological processes impinging on one can shed light, in a reciprocal way, on the other. (SL)

Presents a restatement of the three basic constructs of "language ego,""language ego boundaries," and "permeability of language ego boundaries," discusses interdisciplinary "borrowing" of constructs, and examines the question of theory validation. (Author/AM)