A <u>double-blind experiment </u>allows researchers to identify the specific effects of the independent variable from the possible effects of the experimenter's and the participants' expectations about it.
<u>Explanation</u>:
The double-blind experiment is conducted to ensure that the results of the experiments are not biased. The double-blind study states that the person who is implementing the experiment and the person involved in the experiment are not aware of each other. So there will be no bias in the experimental treatment.
The reliability in the double-blind experiment is improved. Under this experiment unintentional tipping off the study participants and biasing of the evaluation results by the researchers can be avoided.
It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, here is the answer. <span>The first known democracy came about in Greece about 500 BC when Cleisthenes overthrew Peisistratus and the type of democratic institutions that the Greeks then lived under for the next two centuries is DIRECT DEMOCRACY. Hope this helps.</span>
The definition of political anthropology is the study of political systems as the basic structure of a society
Source: http://www.yourdictionary.com/political-anthropology
Slaves were to be counted as 3/5. The Constitution states, "three-fifths all other persons.
