evaluated a method for improving the psychological well being of nursing home residents with severely progressed dementia. The study suggested that the mild exercise of rocking may release endorphins and improve mood as well as reduce pain. After determining that rocking in platform rocking chairs produced a soothing effect, instructional materials were produced and are used by a large number of care providers in a variety of settings across the country and around the world to improve the well being of persons with dementia.