Final answer:
The idea that smiling can make one feel happier is supported by the Facial Feedback Hypothesis, which states that facial movements can influence emotional experiences.
Step-by-step explanation:
The song "Put on a Happy Face" suggests that the act of smiling can lead to feelings of happiness, which aligns with the Facial Feedback Hypothesis. This hypothesis posits that one's facial expressions can influence their emotional experiences. Specifically, it suggests that smiling can initiate or intensify feelings of joy, while frowning may lead to less positive emotions. This is because the muscles in the face can send feedback signals to the brain to influence the emotional state. This stands in contrast to theories like the James-Lange theory, which posits that emotional experience is the result of physiological arousal, and the Cannon-Bard theory, which sees emotional experience and physiological arousal as occurring simultaneously but independently. The Two-factor theory or Schachter-Singer theory proposes that emotions involve both physiological arousal and a cognitive label.