“‘Both caffeine and expectation of having consumed caffeine improved attention and psychomotor speed,’ researchers wrote in the study.

Researchers also took stock of the study participants’ moods during the study, and found that the people who thought they were drinking caffeinated coffee but weren’t had happier moods than the others.”

I am convinced I would know if my morning coffee was decaffeinated. Did this study include any Coffee-Achievers like myself? Did it include any people with CFS/ME? Was this the coffee-drinking participants SECOND cup of coffee that day? In other words, did the participants try to drink only decaf then actually get up and get dressed in the morning?

Another scientific area that needs more research.