A researcher examined participants' memory following emotionally shocking events by manipulating whether participants viewed a violent or a nonviolent version of a video.The video in the two conditions was identical except for two seconds in which the violence variable was manipulated.That the video was identical except for the manipulation represents the control technique of

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Quizplus · Accepted Answer

Manipulating only one variable while keeping all other aspects of the experiment constant is the control technique used to eliminate the possibility that the observed effects are due to extraneous variables. This is known as a controlled experiment. By keeping the video content constant except for the manipulated variable, the researcher is able to isolate the impact of the independent variable (violence) on participants' memory.

A Researcher Examined Participants' Memory Following Emotionally Shocking Events by Manipulating