Answers to theoretical questions about the place of input in a formal second language acquisition model are dependent on a distinction between two kinds of learner hypotheses. Type-N hypotheses require "negative evidence" for testing, while Type-P hypotheses are tested on the basis of "positive data" alone. (Author/CB)

Research on the role of the first language (L1) in second language (L2) learning is reviewed, offering historical background but focusing primarily on work within the last two decades. Attention is given mainly to two aspects of the L1-L2 relationship: positive transfer of knowledge from L1 in the process of learning L2, and negative transfer, or…

Lexical semantics and contrastive lexical semantics can serve as a background discipline to describe and, to some extent, to explain errors in interlanguage. Two developments in lexical semantics that are relevant in this area are the description of sense-relationships and componential analysis. Contrastive lexical semantics involves mapping the…

Misuse of English conjunction related to incoherent writing, according to the literature, comes from learners' first language interference, improper mechanical exercises, and misleading lists of connectors in textbooks demonstrated as if mutually interchangeable without contextual constraints. Form-focused instruction with explicit semantic,…