Examlex
How did Kepler's work differ from that of other astronomers?
Experimental Group
In research, a group of subjects who are exposed to the variable under investigation, as opposed to the control group which is not.
Comparisons
The act of evaluating two or more items to highlight their similarities and differences.
Deception
The extent to which the participants in a research project are unaware of the project or its goals.
Reactivity
The tendency of people and events to react to the process of being studied.
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