Pre-linguistic stage

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  • Pre-linguistic stage
    • in the womb. babies can pick on on their mother's emotions and tone of voice
    • typically say first word around age 1
    • Sound production
      • 0 - 8 weeks - biological noises e.g. crying
        • crying most resembles an 'a' sound and comes in 1 second bursts
      • 8 - 25 weeks - cooing / vocal play
        • produced when baby is in a settled state
        • musical sounds
        • vowel like sound after consonant like sound
        • back of mouth
        • lip movement - imitation
      • 20 - 50+ weeks - babbling
        • less varied
        • smaller set of sounds
        • greater frequency and stability
        • reduplicated
        • variegated
        • resemble sounds of later speech
        • no meaning
      • 12 - 18 months - proto word -> words
        • proto words have a clear sound
        • used meaningfully
        • not clearly identifiable as a word
        • start to become language specific
    • start to laugh around 4 months
    • Speech perception
      • 1 day old - respond to mother's voice
      • turn head to locate sound within a few days
      • differentiate between pairs of consonants from about 4 weeks
      • 2 - 4 months - respond to different tones of voice
      • 6 months - individual words recognised
      • understand several words by end of first year
        • can point in response
      • understanding is ahead of ability to produce first words
    • Speech interaction
      • early work done by caregiver
      • one-sided conversations
      • caregivers speak to babies when they're in a position to answer
      • following conversation rules and teaching baby

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