Speech and language are not easy skills to achieve. Before we can talk or make sense of what people are saying, our sensory foundations must be established. This explains why most kids aren’t fully conversational until around 3 years old.
For example, intelligible speech can’t happen without the cooperation of the vestibular (movement), proprioceptive (body awareness), and tactile (touch) systems who govern the fine motor movements, coordination, and motor planning of the throat, lips, and jaw. If we are to understand a conversation, our auditory (hearing) system needs to differentiate between sounds of words to not mix up what someone is communicating to us.
This all ties back to sensory integration.
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