“…A myriad of terms have been used to describe speakers' interpersonal adjustments, including convergence (Giles et al, 1991;Pardo, 2006), alignment (Pickering and Garrod, 2006), entrainment (Brennan, 1996), synchrony (Edlund et al, 2009), mimicry (Pentland, 2008) and chameleon effect (Chartrand and Bargh, 1999). The terms child-directed speech or motherese (Fernald et al, 1989) have also been employed to describe speakers' accommodation when talking to infants or children, foreign talk or foreignese (Ferguson, 1975;Zuengler, 1991;Smith, 2007) when interacting with non-native speakers and Lombard effect (Van Summers et al, 1988;Zeine and Brandt, 1988) when accommodating to a noisy environment. In this paper, the term accommodation is used in a generic way, covering all types of accommodation and defined as the way speakers adjust their speech to that of their interlocutor, adapting or differentiating it.…”