Sentence Comprehension in Spanish-Speaking Children With Hearing Loss: On the Integration of Morphosyntactic and Lexico-Semantic Cues

Purpose: Children with hearing loss (CHL) who use hearing devices (cochlear implants or hearing aids) and communicate orally have trouble comprehending sentences with noncanonical order. This study explores sentence comprehension strategies in Spanish-speaking CHL, focusing on their ability to integrate morphosyntactic cues (word order, morphological case marking) with verbs differing in their syntax-to-semantics configuration. Method: Fifty-eight Spanish-speaking CHL and 58 children with typical hearing (CTH) with a hearing age of 3;5-7;8 (years;months; i.e., time of adequate access to sound, in the case of CHL since effective fitting or implantation) were recruited in Argentina. A sentence comprehension task using the truth-value judgment paradigm was designed, including sentences with activity verbs and object-experiencer psych verbs in subject-verb-object (SVO) and object-verb- subject (OVS) orders, thus varying in canonicity. Results: Both groups showed good comprehension of SVO sentences with activity verbs but had difficulties with structures that deviated from canonicity. Comprehension was at chance level in both groups and at all hearing ages for sentences with activity verbs in OVS order and sentences with objectexperiencer psych verbs in SVO order (both are noncanonical for the verb type). Sentences with object-experiencer psych verbs in OVS order were also comprehended at chance level by CHL and by the youngest CTH. Conclusions: These results suggest that Spanish-speaking CTH aged 7 years prioritize semantic information over case marking in sentences with a noncanonical syntactic structure. In CHL, difficulties with noncanonical structures seem to extend to semantic deviations, at least until hearing age 7 years. CHL might also struggle with the semantic structures of object-experiencer psych verbs beyond the age when CTH do. These findings are relevant for the linguistic assessment and education of CHL.