Questions tagged [placebo]

I am wondering if an experiment - if run long enough - would automatically rule out the placebo effect. Or do we know that the placebo effect can successfully last, say, years? Or does it tend to only last a set period of time and then fizzle out…

I've been reading about how rituals (performed right before a task) increase confidence and readiness for the task, and improve performance by "dulling the neural response to performance failure" (source), and that they work by triggering the…