“…Across grades, students display a higher lexical precision, syntactic conciseness, and cohesive connectivity (Berman, 2009;Berman & Nir-Sagiv, 2007;Christie & Derewianka, 2008;Fang & Park, 2020;Schleppegrell, 2004). Aligned with this research, quantitative studies have documented the positive contribution of lexico-grammatical resources (i.e., precise vocabulary; complex words and sentences; use of connectives, such as in contrast, furthermore) to analytical writing in middle school (Andreev & Uccelli, 2023;Beers & Nagy, 2011;Deng et al, 2022), high school (Uccelli et al, 2013), and college students (Crossley et al, 2011). For middle schoolers' argumentative writing, in particular, recent research has found that use of adversative connectives was associated with more complex argumentative essays (Taylor et al, 2018).…”