Which theory states that a stimulus triggers physiological changes that produce emotion james-lange theory cannon-bard theory commonsense view of emotions schachter-singer theory?

The right answer is James-Lange Theory. This theory indicates that when experiencing emotions, certain steps are followed; first, we observe a situation or we receive a stimulus (for example to hear a sound) this triggers physiological changes (for example sweating or increment of the heart rate) which triggers the emotion (in this case the fear).

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