Resumen de Complexity, accuracy, and fluency in task-based L2 research: toward more developmentally based measures of second language acquisition

Craig Lambert, Judit Kormos

• This article surveys how complexity, accuracy, and fluency (CAF) have been operationalized in studies of task-based L2 production, pointing out some problems with this approach and the need for more precise information about L2 development during task performance. Research into developing L1 text construction ability is then discussed and some approaches for establishing measures of the relevant constructs in L2 performance are suggested.