I agree! Wouldn't it be scientific to test this with other sounds of round and spiky objects? Formulating theories is all nice and dandy, but it ain't science.

I agree! Wouldn't it be scientific to test this with other sounds of round and spiky objects? Formulating theories is all nice and dandy, but it ain't science. Does the original paper (I couldn't find it in the article) explore this a bit more ? It's actually nice if the effect can be studied on chickens, they are definitely less expensive and more plentiful than human babies.