“Occupational therapists and occupational therapy assistants focus on assisting people to engage in daily life activities that they find meaningful and purposeful. Occupational therapy’s domain stems from the professions’ interest in human beings’ ability to engage in everyday life activities. The broad term that occupational therapists and assistants use to capture the breadth and meaning of “everyday life activity” is occupation... Occupational therapists’ and occupational therapy assistants’ expertise lies in their knowledge of occupation and how engaging in occupations can be used to affect human performance and the effects of disease and disability.”

          Youngstrom, M. J., chairperson Commission on Practice. (2002).Occupational Therapy Practice Framework. American Journal of Occupational Therapy, Vol. 56(#6), 609-649.