Generalization is the ability to apply regularities to novel instances, for example, correctly guessing that the plural for the novel English word 'wug' should be 'wugs'. Early language learners make overgeneralization errors like 'mouses', applying regularities beyond their attested uses. Theories concerned with the question of how learners learn…

The DAPPLE (Dynamic Assessment of Preschoolers' Proficiency in Learning English) is currently being developed in response to a clinical need. Children exposed to English as an additional language may be referred to speech and language therapy because their proficiency in English is not the same as their monolingual peers. Some, but not all, of…

Mastery of grammatical gender is difficult to achieve in a second language (L2). This study investigates whether persistent difficulty with grammatical gender often observed in the speech of otherwise highly proficient L2 learners is best characterized as a production-specific performance problem, or as difficulty with the retrieval of gender…

Most second language acquisition research has been concerned with grammar or phonology and has failed to discuss lexical acquisition. The main reason for this neglect has been the lack of vocabulary study by linguists. However, recent concern with semantic theory has brought new impetus to work on lexical acquisition. Useful research on lexical…