Morphological variability and the source of these errors have been intensely debated in SLA. A recurrent finding is that postpuberty second language (L2) learners often omit or use the wrong affix for nominal and verbal inflections in oral production but less so in written tasks. According to the missing surface inflection hypothesis, L2 learners…

The fundamental difference hypothesis (FDH), as formulated by Bley-Vroman (1990), claims that SLA tends to be nonconvergent because domain-specific linguistic mechanisms available in early childhood cannot be used for language learning in adulthood: Instead, second language (L2) learners deploy domain-general problem solving skills. I claim that…

It has been suggested that tense and aspect distributions are very difficult to learn in a second language (L2), they are prone to fossilize universally, and their interpretive properties are subject to a critical period (Coppieters, 1987). This study focuses on the acquisition of the semantic implications of the preterite-imperfect contrast in…

Two experiments examine the effects of the native language on the second language acquisition argument structure. The linguistic focus is on agentive verbs of directed motion and change-of-state verbs in Spanish and English. Examined whether Spanish and Turkish learners of English undergeneralize the transitivity alternation with manner of motion…

This experimental study on English, Spanish, and Turkish as second languages investigates the interaction of universal principles and first language knowledge in interlanguage grammars by focusing on verbs that participate in the causative/inchoative alternation. (Author/VWL)