“…Although this field of inquiry is still in its beginning stages, findings from recent studies suggest a positive correlation between IDLE and English learning outcomes, such as vocabulary development and self-reported English proficiency (Dressman, Lee, & Sabaoui, 2016;Sundqvist & Sylv en, 2014;Sundqvist & Wikstr€ om, 2015;Sylv en & Sundqvist, 2012). Additional studies have also implied that IDLE could contribute to affective and cognitive domains such as willingness to communicate and English test grades and confidence (e.g., Butler, Someya, & Fukuhara, 2014;Lai, Zhu, & Gong, 2015;Reinders & Wattana, 2015).…”