Topic: Have you ever secretly switched someone's coffee to decaf?
Lee O'Nidas !nBpim1wazU started this discussion 14 years ago#18,715
I found on article on it. http://www.apa.org/monitor/2008/04/caffeine.aspx
The placebo effect works initially where they think it's coffee and are hyper, but then they get even more tired than the group that were told it was decay.