effect of spaced repetition on iranian efl learners’ form recall of english single words and collocations

Acquiring vocabulary has always been recognized as a significant and challenging part of language learning process. in this study, the researcher examined the extent to which form recall of target lexical items by learners of english as a foreign language (efl) is affected by a) repetition and b) by the type of target item; single words versus collocations. the treatment consisted of noncommunicative, (partly) decontextualized activities, in which the target items were taught and examined. for this purpose, 27 iranian intermediate efl learners were chosen and divided into two groups of a with 14 and b with 13 participants. in all activities, the participants had to supply the target items’ forms. data were collected in a classroom setting in two groups, differing only in the type of target item. in class a, the research focused on single words and in class b the focus was on collocations. a pre and post test was administered to the participants before and after the treatment. the findings show a large effect of spaced repetition on form recall of single words and collocations. however, the participants in class a who were treated with single words outperformed the other group.