||An aspect of an experiment which changes during the course of the experiment
|Control (of an experiment)
||The variable or part of the experiment to which all others will be compared.
||Can be thought of as a thin film that stretches across the surface of every liquid
||Some people can experience a lot of pain and barely notice it, while others can experience just a little pain and be miserable
||Experiments in which the participants do not know whether or not they are a part of the control group.
||Experiments in which neither the participants nor the people analyzing the results know who is in the control group
||The data being collected depends to some extent on the opinions of people
||There is no way opinion can affect the experimental results