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Read the article more closely, no Pavlovian response occurred: "The medium/high caffeine consumers who received the placebo reported a decrease in alertness an
by seabee 16y ago
Read the article more closely, no Pavlovian response occurred:
"The medium/high caffeine consumers who received the placebo reported a decrease in alertness and an increase in headache, neither of which were reported by those who received caffeine. However, their post-caffeine levels of alertness were no higher than the non/low consumers who received a placebo, suggesting caffeine only brings coffee drinkers back up to 'normal'."
- tmsh 16y agoI see now, thanks. So: For medium/high caffeine consumers: placebo -> decrease (and headache) caffeine -> 'level 1' Non/low caffeine consumers: placebo-> 'level 1' caffeine -> 'level 2' (where level 2 > level 1). However, I still think there might be some confusion in using a single instance for testing, esp. testing alertness. There might be a large withdrawal symptom going on in the brain that first time that makes alertness more difficult in general.