“…Recent years have witnessed a surge in studies which set out to investigate the effects of task complexity in relation to three broad outcomes: production, typically conceived of as fluency, accuracy, and lexical and structural complexity (e.g. Ahmadian, 2012; Benson, 2015; Hsu, 2015; Ishikawa, 2011; Kormos & Trebits, 2011; Kuiken & Vedder, 2011; Lambert & Robinson, 2014; Michel, 2011), acquisition (the development of specific linguistic forms; e.g. Baralt, 2013, 2014; Kim & Taguchi, 2015; Kim & Tracy-Ventura, 2011; Kim, Payant, & Pearson, 2015; Levkina & Gilabert, 2014), and interaction (e.g.…”