Hi, we're going to get smarter in just a few minutes with some help from a special guest.

I'm Cody Gough. And I'm Ashley Hamer.

Today you learn about the most annoying sounds ever, according to research,

and why leaders who are too smart are actually less effective.

You'll also learn about the biology of real life

sombification from Matt Simon, author of the new book,

Plight of the Living Dead.

Let's satisfy some curiosity on the award-winning Curiosity Daily.

Researchers have identified some of the most and least annoying sounds ever.

Hey Ashley, want to hear the most annoying sound in the world? No I don't Cody.

Yeah, don't worry. I'm not going to do that.

Listen, nails on a chalkboard may be the most cliche of the horrid noises out there, but apparently it's not the most annoying.

And neither is my voice. Good to know.

In 2012, a group of neuroscientists from the UK and Germany tested which sounds

upset the human brain the most.

The researchers put 16 people in an MRI machine and monitored what happened in their brains

while they heard each of 74 different sounds.

Then they asked these unlucky participants to rate which of the noises they found most annoying.

File this under studies I am really glad I didn't participate in. The most

cringe-worthy sounds according to this research do include nails on a chalkboard

but even more annoying than that, a ruler on a bottle, chalk on a chalk board, a fork on a glass, and at most annoying, a knife on a bottle.

This research was useful because it sheds new light

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