“…They were asked to rate their capabilities in vocabulary learning by using a 7-point Likert scale from 1 (I cannot do it at all) to 7 (I can do it well). The items in this section were divided into three parts, according to the categorization by Nation [1]: self-efficacy in word form (item 1, 4, 7, 10, 13,16,19,22,25), self-efficacy in word meaning (item 2, 5,8,11,14,17,20,23,26,28), and self-efficacy in word use (item 3, 6, 9, 12, 15, 18, 21, 24, 27).…”