“…Language development could be affected by deprivation of maternal sounds during an important period of auditory system development (De Regnier, Wewerka, Georgieff, Mattia, & Nelson, 2002). Considering findings regarding the association between higher maternal education (at least graduation compared to middle/high school) and higher language score in LP group, they are consistent with prior studies showing a relationship between socio-economic status (SES) and language development (Wild, Betancourt, Brodsky, & Hurt, 2013;Landry, Smith, & Swank, 2002). For example, higher levels of maternal education, commonly used to indicate SES, were positively associated with higher mental developmental index as early as 18-22 months of age (Vohr et al, 2000).…”