Zahir would like to design an experiment to determine whether the James-Lange theory or the Cannon-Bard theory is correct about the onset of emotions. He decides to elicit the emotion of fear by showing each participant a clip from a horror movie. He will also have each individual connected to a continuous heart rate monitor to measure their arousal. Participants will be instructed to yell out any emotions they experience during the procedure as soon as they feel them. What will he want to measure to determine which theory is correct?
A. Whether they continue to feel afraid after the movie ends and for how long this emotion lasts
B. The timing of when participants yell out that they are afraid relative to when their heart rate begins to increase
C. Changes in facial expression that occur while watching the movie
D. Whether the participants yell out multiple emotions besides fear while watching the movie
Answer: B
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