An aspect of an experiment that 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.
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.
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.