Not Everyone Has an Inner Voice Streaming Through Their Head
The extent to which people experience “inner speech” varies greatly, and the differences matter for performing certain cognitive tasks
![Not Everyone Has an Inner Voice Streaming Through Their Head](https://static.scientificamerican.com/dam/m/1c88161083fa469d/original/GettyImages-661547566web.jpg?w=1200)
The extent to which people experience “inner speech” varies greatly, and the differences matter for performing certain cognitive tasks
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