“…Auditory brainstem function has been linked to language impairment (Banai, Nicol, Zecker & Kraus, 2005; Cunningham, Nicol, Zecker, Bradlow & Kraus, 2001; Johnson, Nicol, Zecker & Kraus, 2007; King et al ., 2002; Wible, Nicol & Kraus, 2004, 2005) and also to auditory expertise, such that speech‐evoked brainstem responses have been shown to be shaped and enhanced by lifelong linguistic (Krishnan, Xu, Gandour & Cariani, 2004, 2005; Xu, Krishnan & Gandour, 2006) and musical experience (Musacchia, Sams, Skoe & Kraus, 2007; Wong, Skoe, Russo, Dees & Kraus, 2007), possibly through corticofugal feedback to subcortical sensory circuitry (Ahissar & Hochstein, 2004; Kraus & Banai, 2007). Although prior studies have investigated cortical‐evoked responses to speech and their relationship to language in individuals with ASD (Boddaert, Belin, Chabane, Poline, Barthelemy, Mouren‐Simeoni, Brunelle, Samson & Zilbovicius, 2003; Boddaert, Chabane, Belin, Bourgeois, Royer, Barthelemy, Mouren‐Simeoni, Philippe, Brunelle, Samson & Zilbovicius, 2004; Ceponiene, Lepistö, Shestakova, Vanhala, Alku, Näätänen & Yaguchi, 2003; Jansson‐Verkasalo, Ceponiene, Kielinen, Suominen, Jäntti, Linna, Moilanen & Näätänen, 2003; Kasai, Hashimoto, Kawakubo, Yumoto, Kamio, Itoh, Koshida, Iwanami, Nakagome, Fukuda, Yamasue, Yamada, Abe, Aoki & Kato, 2005; Kuhl, Coffey‐Corina, Padden & Dawson, 2005; Lepistö, Kujala, Vanhala, Alku, Huotilainen & Näätänen, 2005; Lepistö, Silokallio, Nieminen‐von Wendt, Alku, Näätänen & Kujala, 2006), the majority of studies of the auditory brainstem have focused on responses to non‐speech stimuli (i.e.…”