The demands of daily life often cause mothers high levels of distress and other negative emotions. Anger, including harsh verbal discipline, has been linked to child maltreatment, with long-term adverse effects on a child’s well-being. It is critically important to teach mothers stress management and emotion regulation in addition to parenting skills, but this is yet to be conducted in a formalized manner. | The efficacy of a resilience-enhancement program for mothers in Japan based on emotion regulation: Study protocol for a randomized controlled trial