Final answer:
The facial feedback hypothesis, which suggests that facial expressions can intensify emotional experiences, supports the James-Lange theory of emotion, where emotions are a result of physiological responses.
Step-by-step explanation:
The facial feedback hypothesis is supported by the fact that facial expressions of emotion tend to intensify the experience of emotion. This hypothesis is closely related to the James-Lange theory of emotion, which posits that emotions arise as a result of physiological arousal. For instance, encountering a venomous snake might cause your sympathetic nervous system to initiate physiological arousal, like an increased heart rate, which according to the James-Lange theory, would lead you to experience fear after these bodily changes have occurred. However, the facial feedback hypothesis extends this idea by suggesting that facial expressions themselves can contribute to and intensify the emotional experience.
In contrast, the Cannon-Bard theory asserts that physiological arousal and emotional experience occur simultaneously and independently of one another, and the Schachter-Singer two-factor theory suggests that cognitive appraisal, in addition to physiological arousal, is necessary for an emotional experience to arise.