This article re-examines the question of what makes some grammatical structures more difficult to learn than others, arguing that this question can only be properly understood and investigated with reference to the distinction between implicit and explicit knowledge of a second language. Using a battery of tests that were designed to measure…

A number of theories of second language L2 acquisition acknowledge a role for explicit L2 knowledge. However, the testing of these theories remains problematic because of the lack of a widely accepted means for measuring L2 explicit knowledge. This article seeks to address this lacuna by examining L2 explicit knowledge from two perspectives.…

The oral interaction hypothesis, proposed by Long and investigated by Pica, in second language (L2) acquisition is critiqued. The interaction hypothesis advances two major claims about the role of interaction in L2 acquisition: (1) comprehensible input is necessary for L2 acquisition; and (2) modifications to the interactional structure of…

Examines style shifting in the use of three past tense morphemes by 17 intermediate learners of English as a second language. Style shifting is explored within a single discourse mode--narrative--according to the amount of time made available. Data were collected under three conditions: (1) planned writing; (2) planned speech; and (3) unplanned…

Explores ways of measuring implicit and explicit second language (L2) knowledge and examines the relationship between these measures and measures of general language proficiency. Factor analysis revealed a two-factor solution, reflecting a clear distinction between measures that incorporated a time constraint and those that did not. (Author/VWL)