- Developmental Language Disorders (DLDs),
- Artificial Neural network,
- Discriminant Analysis
Abstract
Developmental Language Disorders (DLDs) pose a great diagnostic challenge to the practicing speech language pathologists in view of the complexities and variability in their manifestations. This is more so in a country like India where multi-lingual and multi-cultural factors influence the acquisition of speech and language in a child. Most of the children are exposed to a minimum of two languages during their preschool and early school years. The diagnostic process is further complicated by the nonavailability of standardized language assessment tools in the Indian languages. The present study aimed at developing Checklist for the Assessment of Language and Behavior (CALB) that would help in classification of children with DLDs, based on literature and case file information with respect to history of onset and development of language disorder, language comprehension, expression and behaviors associated with DLDs. CALB clearly differentiated 7 groups of children with DLD. Further, the classification of DLDs on the basis of Artificial Neural Network and Discriminant analysis is also discussed.
References
Aram D & Nation J. (1975). Patterns of language behavior in children with developmental language disorders. Journal of Speech and Hearing Research 18: 229-41
Bishop, D.V.M & Rosenbloom, L (1987). Childhood Language Disorders. Classification and overview. In Yule, W and Rutter, M (Eds) Language Development and Disorders. Oxford: SIMP Blackwel Scientific and Lippincott.
Bloom, L. & Lahey, M (1978). Language Development and Language Disorders. New York: John Wiley.
Cantwell, D. & Baker, L. (1987). Developmental Speech and Language Disorders. New York: Guillford Press.
Enderby, P. & Davies, P. (1989). Communication disorders: Planning a service to meet the needs. British Journal of Disorders of Communication 24: 301-331.
Fletcher, P. (1991). Subgroups in school-age language impaired children. In Fletcher P, Hall D (Eds). Specific Speech and Language Disorders in Children. London: Whurr.
Geetha, Y.V., Prathibha, K., Ashok, R. & Ravindra, S. (2000). Classification of childhood disfluencies using Neural Networks. Journal of Fluency Disorders, 25(2). 99-117.
Greene, M.C.L. (1963). A comparison of children with delayed speech due to coordination disorders or language learning difficulty. Speech pathology and Therapy 6: 69-77.
Haykin, S. (1995). Neural networks: A comprehensive foundation. New York: Mac Millan College Publishing Company.
Korkman, M. & Hakinan-Rihu, P. (1994). A new classification of Developmental Language Disorders (DLD). Brain and Language 47, 97-116.
Miller, J.F. (1991). Quantifying productive language disorders. In Miller JF (Ed.) Research in Child Language Disorders: A Decade of Progress. Austin, TX: Pro-ed.
Myklebust, H. (1983). Disorders of Auditory Language. In H Myklebust (Ed). Progress in Learning Disabilities. New York: McGraw Hill.
Rapin, I. & Allen, D.A. (1988). Syndromes in developmental dysphasia and adult aphasia. In F Plum (Ed). Language, communication and the brain. New York: Raven Press, 57-75.
Rescorla, L. (1989). The Language Development Survey: a screening tool for delayed language in toddlers. Journal of Speech and Hearing Research 54: 587-99.