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Placebo effects are usually calculated as the difference between placebo treatments and no treatments. Recently, placebo-like effects have been investigated using open and hidden administrations of active treatments. The aim of the study was to directly compare the two types of placebo effects and examine how they are influenced by personality traits.In a within-subject, randomized, blinded, balanced...
Rationale There is a large variability in the response to pharmacological treatment. Some studies have linked this variability to stress levels, i.e., stress may slow and/or reduce absorption of drugs. Objectives The present experiment investigated the hypothesis that stress slows absorption of drugs. Methods Twenty-four volunteers participated in a within-subjects design with three conditions,...
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