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History, 11.04.2020 00:13 sakurauchiha913

A researcher is studying the effects of negative outcomes on the human brain in a psychological experiment. The researcher shows ten participants various pictures and designs. When the participants see a red star, they are immediately given a brief, painful shock and their brainwaves are analyzed. A different group of ten participants is given the same pictures and designs but are given no shock when they see the red star.
What was the control in the experiment?

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