Chloe has just gotten on a roller coaster. As the car ascends the slope for the first big plunge, she feels fear and anticipation. She notices that her heart rate has increased, that her palms are sweating, and that she feels "butterflies" in her stomach. According to the James-Lange theory, Chloe's emotional response to the roller coaster is because
the stimulus of the roller coaster has caused a physiological change; she has interpreted this change as the emotions of fear and anticipation.