Final answer:
The James-Lange theory explains Sonya's fear due to physiological arousal occurring before emotional response. The two-factor theory states that Paul's lack of fear is due to cognitive interpretation of the snake as harmless.
Step-by-step explanation:
The James-Lange theory of emotion states that emotions arise from physiological arousal. In the scenario given, when Sonya and Paul encountered the snake, Sonya experienced fear because her physiological arousal (e.g. racing heart) occurred before her emotional response. On the other hand, Paul, realizing the snake was harmless, did not experience fear because his physiological arousal did not trigger the emotional response.
The two-factor theory, also known as the Schachter-Singer theory, adds a cognitive component to the emotional experience. According to this theory, emotions are composed of two factors: physiological arousal and cognitive interpretation. In the scenario, Paul's cognitive interpretation that the snake was harmless led to his lack of fear, despite the physiological arousal. Sonya, on the other hand, interpreted the snake as a threat, which resulted in her fear response.