BASLP 3rd Semester Notes  » Paper 2: Speech Sound Disorders

Unit 1: Speech Sound Acquisition and Development

• Fundamentals of articulatory phonetics – phonetic description of vowels & consonants.
• Phonology & phonological theories – generative phonology, natural phonology.
• Phonology & phonological theories – non-linear phonology, optimality theory.
• Methods to study speech sound acquisition – diary studies, cross sectional studies and longitudinal studies.
• Speech sound acquisition
  1. birth to one year (development of infant speech perception, early speech production).
  2. one to two years (consonant inventories, influence of phonological knowledge on vocabulary acquisition).
  3. two to five years (growth of phonetic, phonemic, phonotactic inventory –  consonants, clusters, phonological patterns).
  4. above five years (speech sound mastery and development of literacy – phonological awareness).
  5. Factors influencing speech sound acquisition
• Acoustics of speech sounds
• Speech intelligibility, factors affecting speech intelligibility, assessment of speech intelligibility
• Co articulation: types and effects
• Phonological development in bilingual children.
• Phonological development in Indian languages.