subject-verb agreement

The timing of corrective feedback (CF) provision has been a controversial issue in SLA research. Despite widespread research, there is still disagreement on whether the erroneous structures should be addressed immediately or at a delayed time after task completion. This study investigates the comparative effects of immediate and delayed feedback on developing subject-verb (s-v) agreement by Iranian EFL learners. To this end, 28 university students were divided into immediate (n=14) and delayed (n=14) CF groups after the administration of the Oxford Placement Test. The study involved a pre-test, three treatment sessions and a post-test. The two feedback groups received treatments followed by either immediate feedback provided after task completion or delayed feedback delivered after 3 days of task completion. The tests and treatments contained various activities including multiple-choice, cloze, fill-in-the-blanks and picture description task. The results of the analysis of test scores on the pre- and post-tests were indicative of the outperformance of the immediate CF group, implying that the immediate feedback may be more beneficial for developing s-v agreement accuracy than delayed feedback. The findings of this investigation can bear efficient implications for language teachers and researchers.

The current paper pursues two aims: to employ Classical Test Theory (CTT) to develop and refine a test, and to determine the impact of the age factor on L2 grammar among Iranian EFL learners, providing evidence for the claim that CTT best evaluates the consistency of measurements in age-related studies. The study examines the performance of adults or teenagers as pre- and post-puberty learners, in the grammar test devised through CTT, to conclude whether younger learners or older ones perform better on subject-verb agreement. Based on random sampling, twenty-three male participants, including 12 adults and 11 adolescents, upper-intermediate native speakers of Persian, took part in the study. They were tested on a 60-item test of grammar (on subject-verb agreement), which has been developed using the CTT model, as it fits small sample sizes and can be used for understanding complex issues (e.g., age-related issues). Other than devising a test on agreement using CTT as a model, the results revealed that post-puberty learners scored better than their younger counterparts, partly because they are cognitively more mature. However, age is not the one and only factor in second language learning, and other factors like individual differences, contextual factors, and methodological rigor should be taken into account.