Answer:
facial feedback hypothesis
Explanation:
Their reactions best-illustrated phenomenon known as the facial feedback hypothesis. This hypothesis states that the contractions of the facial muscles of an individual may not only communicate what a person feels to others but also to the person in question. Meaning that the individual's facial expressions can have a direct influence on the way the individual is feeling. In this scenario, the rubber bands caused the individuals to smile which in term made them feel more happy than sad.
