Under the Articles of Confederation, most power was concentrated in the

The placebo effect occurs

A) only in studies using suggestion. B) only in studies involving medication. C) when participants have fairly specific expectations of an experimental treatment. D) when participants have no preconceived notions about any aspect of the research.

One of the unusual features of the government of the United States is __________, in which a national government shares power with states and local governments

Fill in the blank(s) with correct word