“…However, retention periods for these studies were shorter, 24 h and 48 h respectively. Also in typically developing children, benefits of an external focus of attention were only found during or immediately after practice (Abdollahipour, Wulf, Psotta, & Nieto, 2015, Krajenbrink et al, 2018 or after a 24 h to 48 h delay (Brocken et al, 2016;Flores, Schild, & Chiviacowsky, 2015;Hadler, Chiviacowsky, Wulf, & Schild, 2014;Thorn, 2006). Moreover, some studies did not find any differences between both attentional foci either during practice or after a short retention (Chow, Koh, Davids, Button, & Rein, 2014;Emanuel, Jarus, & Bart, 2008;Perreault & French, 2016;van Abswoude, Nuijen et al, 2018) or after a longer retention period (Krajenbrink et al, 2018).…”