Resumen de Exploratory research on second language practice distribution: An Aptitude × Treatment interaction

Yuichi Suzuki, Robert DeKeyser

• The current exploratory study aimed at investigating the role of cognitive aptitudes in determining the effect of practice distribution on second language learning. The study investigated to what extent language-analytic ability and working-memory capacity predicted the acquisition of grammar under two learning conditions that differ 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 revealed that language-analytic ability was only related to performance after distributed practice, whereas working-memory capacity was only related to performance after massed practice. These Aptitude × Treatment interaction findings can help establish the learning processes operating under distributed/massed practice conditions.