“…In general, fluency gains have been reported, whereas the evidence regarding complexity and accuracy is more variable (Ahmadian & Tavakoli, 2011;Bagheri, Rahimi, & Riasati, 2012;Bret Blasco, 2014;Bygate, 2001;Bygate & Samuda, 2005;García Mayo, Imaz Agirre, & Azkarai, 2017;Hidalgo, 2018;Hu, 2018;Lynch & Maclean, 2000;Pinter, 2006Pinter, , 2007Pinter, , 2011Sample & Michel, 2014). The fact that findings regarding some aspects are inconclusive (Bui et al, 2018;Bygate, 2018) may be partly due to the great diversity of variables analyzed (context, age, level, tasks, and time span between repetitions) (Lázaro-Ibarrola & Hidalgo, 2017).…”