“…The incidence of low language performance (scoring ≥ 1.5 SDs below the term mean PLS-5 total score, MLUm, or TNW) in children who produced > 50 utterances over 10 min in the term group (13%) was comparable to previous incidence studies using direct assessment methods (Raghavan et al, 2018;Reilly et al, 2010), whereas the incidence of low language in the preterm group (18%) was somewhat lower than expected (Foster-Cohen, Friesen, Champion, & Woodward, 2010), perhaps reflecting relatively low medical acuity in this study group. Our findings are consistent with some of the literature in this area suggesting that children born preterm demonstrate reductions in conversational MLU (Félix et al, 2017;Imgrund et al, 2019;Le Normand et al, 1995;Rice et al, 1999), sentence complexity (Grunau et al, 1990;Imgrund et al, 2019), and lexical diversity, particularly when it comes to verbs (Imgrund et al, 2019;Le Normand & Cohen, 1999), although these findings are by no means universal (Crosbie et al, 2011;Feldman et al, 1994;Grunau et al, 1990;Mahurin-Smith et al, 2014). Demographic differences between study participants may account for some of this variation-for example, two of the studies with significantly different results to ours examined an older group of children, which may reflect differences in the clinical validity of LSA in different age groups (Crosbie et al, 2011;Mahurin-Smith et al, 2014).…”