Addresses the issue of how we know what learners know based on evidence from second language (L2) learners' spontaneous speech samples gathered longitudinally. Examines some of the problems involved in the analysis of spontaneous speech, with focus on second language studies within the generative framework. Considers the effects of the comparative…

Reexamines the morphology/functional category debate in light of empirical data drawn from a longitudinal study of two intermediate learners of French as a second language (L2). Argues that inflectional deficits--which appear as both nonfinite verbs and as other morphological errors in the interlanguage data--support neither a codependence of…

Compares the acquisition of the syntax of negation in first-language development and second-language acquisition, particularly the acquisition of colloquial French and German by native speakers of Spanish. The comparison is intended to shed light on the principles and mechanisms underlying first- and second-language development. (67 references)…