Since its emergence some 20 years ago, the field of second language acquisition research has focused on two areas: the nature of the language acquisition process and the factors which affect language learners. Initial research was essentially descriptive. More recently, researchers have been attempting to explain how acquisition occurs and how learner factors lead to differential success among learners. The focus has alternately broadened as researchers became more aware of the complexity of the issues and narrowed as greater depth of analysis was required. The paper suggests that the next phase of research will be characterized by a union of these two focal areas: learning and the learner. It also recommends that more research attention be given to tutored acquisition.