“…For preschool children, finiteness marking in spoken language has long shown promise as a clinical marker for SLI (Bedore & Leonard, 1998;Rice & Wexler, 1996;Tager-Flusberg & Cooper, 1999). Finiteness marking, or specification of grammatical tense, has an unusually protracted course of development for children with SLI (Bishop, 1994;Eyer & Leonard, 1994;Fletcher & Peters, 1984;Leonard, Caselli, Bortolini, McGregor, & Sabbadini, 1992;Marchman, Wulfeck, & Weismer, 1999;Rice, Wexler, & Cleave, 1995;Rice, Wexler, & Hershberger, 1998). As a group, children with SLI inconsistently omit finite markers in spontaneous language and in elicited tasks through the age of 8 years; these omissions for peers with TL are nearly nonexistent by the age of 5 years (Rice et al, 1998;Weiler, 2016).…”