Do you have an inner voice? If not, you're not alone

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Do you have an inner voice or monologue? Chances are you do, but new research shows that we might all have very different ones and some of us might not have one at all.

The same research also shows that whether you have an inner voice or not and how strong it is or not might impact how memory and learning work for different people.

For more, host Celeste Headlee speaks to the lead researcher on the project, University of Wisconsin-Madison psychology professor Gary Lupyan.