The phenomenon where the strength and nature of the placebo effect itself is modulated by external and internal meta-factors: the prestige of the institution, the charisma of the doctor, the patient's prior beliefs about placebos, the cultural narrative around the treatment, and even the patient's awareness that they might be receiving a placebo. The placebo isn't a static trick; it's a dynamic, context-dependent psychological response.
Example: A patient in a famed university hospital trial experiences strong pain relief from a saline injection (placebo). A week later, in a dingy clinic, the same injection does nothing. The Metaplacebo Effect is at work: the aura of authority and expectation in the first setting amplified the placebo response, while the second setting dampened it.
by Dumu The Void February 4, 2026
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