From the executive summary:
In 2001, the National Endowment for the Arts developed a cooperative agreement with The George Washington University to conduct a multisite national study with the aim of measuring the impact of professionally conducted community based cultural programs on the general health, mental health, and social activities of older persons, age 65 and older. Referred to as the Creativity and Aging Study, the project’s formal title is “The Impact of Professionally Conducted Cultural Programs on Older Adults”. No previous study of this nature using an experimental design and a control group had been carried out.
The George Washington University