Why this sound makes your skin crawl | Blog | Ali Cook Magician
CHALKworld
The feeling you get when nails scratch a blackboard has a name | New Scientist
Revealed: Why fingernails down a blackboard sound so awful | Daily Mail Online
The Squeaky Window Gets The Lube - Sheldon Nesdale
Science Blatherings - Useless Factoid #1: The skin crawling sensation that the sound of chalk screeching across a chalkboard illicit's is a genetically determined trait. | Facebook