Over the course of the 21 day experiment the…
Over the course of the 21 day experiment the participants were educated about the science behind placebo effects and then informed that they were taking a placebo displayed fewer IBS symptoms and greater relief compared with people who are educated about the placebo Space and didn’t receive any pills.
— from The Mind in the Cockpit · Chatter, the voice in our head, why it matters and how to Harness it by Ethan Kross