Speech sound acquisition

Speech Sound Acquisition

Faculty: Dr. Darshan H S, Assistant Professor of Speech Language Pathology, NISH, Mangalore

Progression to Intelligible Speech: Transition from birth cries to intelligible speech spans several years, focusing on:

• Vowel and consonant production

• Syllable structures

• Prosody

Phases of Speech Acquisition (Bleile, 2004):

• Phase 1: Laying Foundations for Speech (birth to 1 year)

  • During this phase, infants engage in crying, cooing, and babbling.

  • By the end of the year, they begin producing their first words.

  • This foundational stage is crucial for developing the ability to articulate sounds and understand basic verbal communication.

• Phase 2: Transitioning from Words to Speech (1 to 2 years)

  • Focus shifts to transitioning from single words to more complex speech patterns.

  • Vocabulary acquisition begins with simplified phonological structures, where children typically use one or two syllables.

  • Children experiment with sound combinations and begin to use words to express desires, emotions, and needs, bridging the gap between isolated word usage and more sophisticated speech.

• Phase 3: Growth of the Inventory (2 to 5 years)

  • This stage marks significant advancements in speech sound inventory, with children learning the majority of speech sounds, syllable structures, and grammatical rules.

  • They further develop their vocabulary, building towards complex sentences.

  • Experimental use of language increases, with more articulation of thoughts and feelings through speech.

• Phase 4: Mastery of Speech and Literacy (5+ years)

  • In this final phase, children achieve mastery of speech and literacy, which includes the timing and prosody of speech.

  • They become proficient in the accurate production of longer words and sentences, enhancing their writing, reading, and spelling capabilities.

  • This phase marks the integration of spoken language skills into academic tasks, establishing the foundation for proficient literacy skills in school and beyond.

Development of Oral Mechanism: An interrelationship exists between speech intelligibility and the development of oral, neurological, respiratory, and laryngeal systems (Kent, 1976).

Infant Auditory Perception: Infants can perceive sounds before birth and prefer their mother's voice, which aids in language learning.

Phonological Awareness: Critical for reading, this skill progresses from awareness of words and syllables to finer phoneme manipulation.

Factors Influencing Acquisition: Age, gender, socioeconomic status, language development, and individual variability all impact speech sound development.