1. Understanding developmental language disorder-The Helsinki longitudinal SLI study (HelSLI): A study protocol
- Author
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Marja Laasonen, Leena Lauronen, Kati Heinonen, Sini Smolander, Sari Kunnari, Eva Arkkila, Christopher W. Bartlett, Hanna-Reetta Lajunen, Emmanuel M. Pothos, Todd M. Bailey, Miika Leminen, Paavo H.T. Leppänen, Pekka Lahti-Nuuttila, Anu-Katriina Pesonen, Ahmed Geneid, Teija Kujala, HUS Head and Neck Center, Department of Psychology and Logopedics, Korva-, nenä- ja kurkkutautien klinikka, Medicum, University of Helsinki, Cognitive Brain Research Unit, Kliinisen neurofysiologian yksikkö, HUS Medical Imaging Center, DyslexiaBaby, University Management, and Developmental Psychology Research Group
- Subjects
Male ,Longitudinal study ,RJ101 ,kielelliset häiriöt ,Specific language impairment ,Artificial grammar learning ,preschool child ,3124 Neurology and psychiatry ,Developmental psychology ,temperamentti ,Study Protocol ,0302 clinical medicine ,kielellinen kehitys ,Clinical Protocols ,Child temperament ,kielen omaksuminen ,EEG ,Longitudinal Studies ,10. No inequality ,kielen oppiminen ,General Psychology ,Finland ,pathophysiology ,education.field_of_study ,child ,4. Education ,05 social sciences ,Neuropsychology ,longitudinal study ,Cognition ,General Medicine ,Language acquisition ,psychology, Child ,P1 ,female ,Child, Preschool ,geneettiset tekijät ,Psychology ,Event-related potentials ,Child behavior ,multilingualism ,515 Psychology ,(Nonverbal) short-term memory ,Population ,lcsh:BF1-990 ,developmental language disorder ,lapset (ikäryhmät) ,050105 experimental psychology ,03 medical and health sciences ,Developmental language disorder ,oppimisvaikeudet ,medicine ,Genetics ,Humans ,0501 psychology and cognitive sciences ,Language Development Disorders ,6121 Languages ,human ,education ,kielellinen erityisvaikeus ,perinnöllisyystiede ,Sequential bilingualism ,medicine.disease ,työmuisti ,Developmental disorder ,lcsh:Psychology ,Clinical EEG ,clinical protocol ,030217 neurology & neurosurgery - Abstract
Background Developmental language disorder (DLD, also called specific language impairment, SLI) is a common developmental disorder comprising the largest disability group in pre-school-aged children. Approximately 7% of the population is expected to have developmental language difficulties. However, the specific etiological factors leading to DLD are not yet known and even the typical linguistic features appear to vary by language. We present here a project that investigates DLD at multiple levels of analysis and aims to make the reliable prediction and early identification of the difficulties possible. Following the multiple deficit model of developmental disorders, we investigate the DLD phenomenon at the etiological, neural, cognitive, behavioral, and psychosocial levels, in a longitudinal study of preschool children. Methods In January 2013, we launched the Helsinki Longitudinal SLI study (HelSLI) at the Helsinki University Hospital (http://tiny.cc/HelSLI). We will study 227 children aged 3–6 years with suspected DLD and their 160 typically developing peers. Five subprojects will determine how the child’s psychological characteristics and environment correlate with DLD and how the child’s well-being relates to DLD, the characteristics of DLD in monolingual versus bilingual children, nonlinguistic cognitive correlates of DLD, electrophysiological underpinnings of DLD, and the role of genetic risk factors. Methods include saliva samples, EEG, computerized cognitive tasks, neuropsychological and speech and language assessments, video-observations, and questionnaires. Discussion The project aims to increase our understanding of the multiple interactive risk and protective factors that affect the developing heterogeneous cognitive and behavioral profile of DLD, including factors affecting literacy development. This accumulated knowledge will form a heuristic basis for the development of new interventions targeting linguistic and non-linguistic aspects of DLD. Electronic supplementary material The online version of this article (10.1186/s40359-018-0222-7) contains supplementary material, which is available to authorized users.
- Published
- 2018