Expectations and placebo responses to caffeine-associated stimuli
PsychopharmacologyPublished 1 September 2003
Magne Arve Flaten, Ole Aasli, Terry D. Blumenthal
Citations44
SJR quartileQ1
SJR score1.16
SNIP0.97
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TL;DR
The main finding in this study was that relatively strong expectations about the effects of coffee did not generate placebo responses after administration of decaffeinated coffee, and the expectancy theory of placebo effects received only limited support.
Abstract
The main finding in this study was that relatively strong expectations about the effects of coffee did not generate placebo responses after administration of decaffeinated coffee. Expectations were dose dependent, whereas the placebo response was not. However, expected alertness after coffee predicted recorded alertness after coffee. In sum, the expectancy theory of placebo effects received only limited support.
Keywords
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