Presents data on the past and present state of research on the interlanguage hypothesis, with specific attention to its extension to children. Outlines a dual approach to developing a theory of second language acquisition--a macrobehavioral approach and a neurofunctional approach. Finally, problems for the interlanguage hypothesis are discussed.…

Examines language as a multimodal sensory enhancement system, integrating recent neuroanatomical and neurophysiological findings on the ontogenesis of neuronal structures with the generative concept of Universal Grammar for determination of fundamental differences between primary and secondary language acquisition. (Author/CB)

Considers the historiography of language teaching theories from the perspective of bimodality and suggests some directions research should take to empirically substantiate the usefulness of this concept for second-language acquisition in a classroom environment. (Author/CB)