It seems that I am on a vendetta against the myth of rigid prices, but I find it frustrating that macroeconomics keeps insisting on models where price rigidity is crucial despite the evidence that prices are not rigid. I have given plenty of evidence on this blog that retail prices are indeed flexible, in the United States and elsewhere, and even evidence that wages are more flexible than assumed. Too many links to list them here.
But there is also an argument out there that retail prices are only part of the question, producer prices are where the real action is, and those are definitely rigid. If you are such a firm believer is price rigidity, you are in for a big surprise that should make you lose your faith. Pinelopi Koujianou Goldberg and Rebecca Hellerstein show that producer prices are about as flexible as consumer prices that include temporary sales, and more flexible than consumer prices excluding sales periods. So, what is going to be the next line of defense of the religion of price rigidity?