“…It varies widely among individuals and correlates with many cognitive processes, such as general fluid intelligence, problem solving, planning, or language comprehension (Engle, Tuholski, Laughlin, & Conway, 1999;Kane et al, 2004;Unsworth, Redick, Heitz, Broadway, & Engle, 2009). Recently, a few studies from the emerging field of gesture research have also related WM to the production of co-speech gestures and have shown a gesture effect on working memory-that is, an increase in WM accuracy due to gesturing (Cook, Yip, & Goldin-Meadow, 2011;Goldin-Meadow, Nusbaum, Kelly, & Wagner, 2001;Ping & Goldin-Meadow, 2010;Wagner, Nusbaum, & Goldin-Meadow, 2004). Co-speech gestures are meaningful hand movements that are semantically and temporally integrated with the speech they accompany.…”