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Individualization of practice distribution in second language grammar learning


 The aim of the present study was establishing to what extent individual differences in cognitive aptitudes were
 associated with second language (L2) morphological acquisition under different practice distribution. Sixty participants studied
 morphological rules of a novel miniature-language system in order to use them for oral production. They engaged in four training
 sessions in either shorter-spaced learning (twice a week) or longer-spaced learning conditions (once a week). Their oral
 production performance both during and after the training was related to their metalinguistic rule rehearsal ability (MRRA) and
 working memory capacity (WMC). Multiple regression analyses revealed that MRRA predicted learners’ training and posttest
 performance mainly under the longer-spaced condition, while WMC played a limited role at best under both learning conditions.
 These results suggest that practice distribution may be individualized based on learners’ aptitude strengths to optimize L2
 morphological learning.