“…Iconic gestures represent semantic information in their form or movement (e.g., opening and closing the extended index and middle finger to represent scissors). This research focuses on four different aspects of iconic gestures: (1) Comprehension of the iconicity of iconic gestures (Botting et al, 2010;Wray et al, 2016;Perrault et al, 2019); (2) Production of iconic gestures during specific tasks such as narrative tasks, picture description, or in shared book-reading situations (Iverson and Braddock, 2011;Mainela-Arnold et al, 2014;Lavelli et al, 2015;Lavelli and Majorano, 2016;Wray et al, 2016Wray et al, , 2017; (3) The beneficial effect of iconic gestures for word learning (Ellis Weismer and Hesketh, 1993;Lüke and Ritterfeld, 2014;Vogt and Kauschke, 2017); (4) Adaptation in parental input (Grimminger et al, 2010;Wray and Norbury, 2018). Tolar et al (2008) showed in their cross-sectional study with TD children that the ability to understand the meaning of iconic gestures even in this group is only slightly developed, with just 14% of the 2;6-year-old children performing above chance.…”