The current study examines a practical approach to implement listening-to-retelling (L-Rt) as a task of speaking tests for Japanese EFL learners. L-Rt is rarely adopted as a task for speaking assessment due to its difficulty (Hirai, 2015; Yokouchi, 2014). In this regard, the current study explores whether listening difficulty adjustments reduce the L-Rt difficulty, focusing on the following three adjustments: the use of high-frequency words, syntactic simplification, and the insertion of pauses. To investigate the effects of the three adjustments, a total of 25 participants were divided into three groups: (1) the group performing reading-to-retelling (R-Rt) with original passages; (2) the group performing L-Rt with original passages; (3) the group performing L-Rt with adjusted passages, and performed each type of retelling with three passages. The scores of participants’ comprehension and retelling were compared using the Kruskal–Wallis rank-sum test, and a Spearman’s rank-order correlation test was conducted to examine the relationship between them. The results revealed that, although listening difficulty adjustments did not enhance either comprehension or retelling, a strong relationship between comprehension and retelling was identified, suggesting that listening difficulty adjustments develop the validity to assess learners’ speaking skills that learners who achieve sufficient comprehension retell the story successfully, and learners who retell the story successfully entail adequate comprehension.
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