When a subject's response to a treatment is due to their expectations rather than the actual treatment, they are showing the effect?

The placebo effect. A placebo is a substance that does not possess any healing quality, but when taken by a sick person because of its belief in its healing effects it produces positive effects. The placebo effect occurs when someone takes a placebo substance and it helps in a positive way. Many medical or scientific investigations use the placebo effect to better determine the effect of the substance studied on the organism.

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Ifound this on google “separation of powers. a fundamental principle of the united states government, whereby powers and responsibilities are divided among the legislative branch, executive branch, and judicial branch.” i hope this you for what your looking for

The answer is society was a caste like system with poor whites at the bottom of the white social ladder.