The Hare and the Tortoise in Ecological
L2
Learning: Distributed Practice Effects in Vocabulary and Grammar
Shona Whyte, Katerina Palasis, Amanda Edmonds, Emilie Gerbier Abstract
Research on the distributed practice effect, that is the impact of different intervals between learning sessions, has investigated both intentional and incidental learning of second language vocabulary and grammar targets. This research is complex and has produced conflicting findings: whereas robust effects have been shown for intentional vocabulary learning, evidence for incidental and grammar learning are less clear. The present experiment combines intentional vocabulary and incidental grammar targets in L2 English, and compares participants working at 2‐ and 7‐day intervals on an online platform designed to provide contextualized and pedagogically sound learning activities. Results of vocabulary knowledge ( N = 72) and acceptability judgment ( N = 70) tests showed significant vocabulary learning under intentional conditions, but no significant incidental grammar learning. Experimental design and pedagogical implications are discussed.