The Competition-Compensation Account of Developmental Language Disorder

Autor/inn/en	Harmon, Zara; Barak, Libby; Shafto, Patrick; Edwards, Jan; Feldman, Naomi H.
Titel	The Competition-Compensation Account of Developmental Language Disorder
Quelle	In: Developmental Science, 26 (2023) 4, (16 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Harmon, Zara)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1363-755X
DOI	10.1111/desc.13364
Schlagwörter	Developmental Disabilities; Language Impairments; Children; Language Processing; Verbs; Competition; Generalization; Morphemes; Inferences; Bias; Familiarity; Sequential Learning + Suchen Sie Ihr Suchwort? Entwicklungsstörung; Speech disorder; Speech disorders; Speech disabilities; Speech disability; Speech handicap; Speech handicaps; Speech impairment; Speech impairments; Language handicaps; Sprachbehinderung; Child; Kind; Kinder; Sprachverarbeitung; Wettkampf; Morphem; Inference; Inferenz; Didaktische Sequenzierung; Lernsequenz
Abstract	Children with developmental language disorder (DLD) regularly use the bare form of verbs (e.g., dance) instead of inflected forms (e.g., danced). We propose an account of this behavior in which processing difficulties of children with DLD disproportionally affect processing novel inflected verbs in their input. Limited experience with inflection in novel contexts leads the inflection to face stronger competition from alternatives. Competition is resolved through a compensatory behavior that involves producing a more accessible alternative: in English, the bare form. We formalize this hypothesis within a probabilistic model that trades off context-dependent versus independent processing. Results show an over-reliance on preceding stem contexts when retrieving the inflection in a model that has difficulty with processing novel inflected forms. We further show that following the introduction of a bias to store and retrieve forms with preceding contexts, generalization in the typically developing (TD) models remains more or less stable, while the same bias in the DLD models exaggerates difficulties with generalization. Together, the results suggest that inconsistent use of inflectional morphemes by children with DLD could stem from inferences they make on the basis of data containing fewer novel inflected forms. Our account extends these findings to suggest that problems with detecting a form in novel contexts combined with a bias to rely on familiar contexts when retrieving a form could explain sequential planning difficulties in children with DLD. (As Provided).
Anmerkungen	Wiley. Available from: John Wiley & Sons, Inc. 111 River Street, Hoboken, NJ 07030. Tel: 800-835-6770; e-mail: cs-journals@wiley.com; Web site: https://www.wiley.com/en-us
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01