“…Regarding the specific domains of process quality, some of the studies demonstrate that educators' preservice education may be particularly determinant for the language-learning environment provided for infants (King et al, 2016[103]), namely the level of clarity and reasoning involved in educators' talk (Degotardi, Han and Torr, 2018 [104]; Hu et al, 2019 [105]). Similarly, Barros et al (2018[37]) found that having a qualified lead educator was associated with higher quality in the domains of Facilitated Exploration, i.e.…”