Hiyoshijinja has hosted an annual festival in November called "Hakidashi-matsuri," which is based on folklore that an entertainer visited the shrine to offer a sacred dance and purify worldly grudges and sufferings. The festival provides an opportunity for people to discard their emotional ruts and attachments, such as sorrow and resentment, and to face others with a heart of forgiveness and healing, according to the shrine's website. One of the main events during the festival is called "Hakidashi-zara," in which people purchase a plate and "seal" their thoughts and feelings that they want to discard in it. Then they break the plate. The research group wondered if a similar method using paper would work. The researchers conducted two experiments to see if writing down angry thoughts on a piece of paper and throwing it away would help people to suppress their rage.