Not everyone talks to themselves out loud, but that little voice talking inside your head exists in everyone. That little voice is called inner speech, and you can hear it when you're thinking or silently reading. When inner speech is occurring, your larynx is actually making tiny muscular movements. In the 1930s, psychologist Lev Vygotsky conjectured that inner speech was caused by the internalization of external speech. He put forth the idea that inner speech goes through the same process as external speech up until the words are spoken aloud-and there may be some truth to this theory.
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Key Facts In This Video
The proper name for the voice instead your head is "inner speech." 00:41
In the 1930s, psychologist Lev Vygotsky put forth the idea that inner speech goes through the exact same process in the body as external speech, up until the words are spoken aloud. 01:03