Here's What Happens When You Read Dr. Seuss While Wearing A Speech Jammer.

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Reading a children's book isn't really hard for most adults, but as this video shows, things start to get significantly more difficult if you're using a "speech jammer." Speech jammers are simply devices that record the user's voice via microphone and play them back through headphones with a fractional delay.

Officially known as Delayed Auditory Feedback (DAF), the device creates confusion in the brain and causes the user to stutter or repeat words over and over (which can be seen in this video).