“…In this regard, Slobin () has hypothesized that language patterns acquired in childhood are “resistant to restructuring in adult second language acquisition” (p. 89). A number of empirical studies have investigated this question (e.g., Athanasopoulos et al, ; Brown & Gullberg, , , ; Bylund, ; Bylund & Athanasopoulous, ; Bylund & Jarvis, ; Daller, Treffers–Daller, & Furman, ; Filipović, ; Flecken et al, ; Hendriks & Hickmann, ; Hijazo–Gascón, ; Larrañaga et al, ; Pavlenko & Volynsky, ; Tomczak & Ewert, ; Vulchanova et al, ; Wu, ; for reviews, see Cadierno, , ). The majority of these studies have concentrated on comparisons of speech alone while a few (Brown, , ; Brown & Gullberg, ; Choi & Lantolf, ; Kellerman & van Hoof, ; Lewis, , ; Negueruela et al, ; Özyürek, ; Stam, , , , , ) have looked at gesture in addition to speech, arguing that speech and gesture together provide a more complete picture of learners' thinking for speaking.…”