Publication details [#63394]

DeKeyser, Robert M. and Yuichi Suzuki. 2017. Exploratory research on second language practice distribution: An Aptitude × Treatment interaction. Applied Psycholinguistics 38 (1) : 27–56.
Publication type
Article in journal
Publication language
Place, Publisher
Cambridge University Press


This investigative inquiry explored the role of cognitive aptitudes in defining the effect of practice distribution on second language learning. The inquiry examined to what degree language-analytic capacity and working-memory ability predicted grammar acquisition under two learning conditions that diverge in the interval between the two training sessions. Learners of Japanese as a second language were trained on an element of Japanese morphosyntax under either distributed practice (7-day interval) or massed practice (1-day interval). The results disclosed that language-analytic capacity was only linked to performance after distributed practice, whereas working-memory ability was only linked to performance after massed practice. These Aptitude × Treatment interaction findings can aid initiate the learning processes operating under distributed/massed practice conditions.