Within the Scottish Executive Health Department, the Chief Scientist Office (CSO) has responsibility for encouraging and supporting research into health services and patient care within the NHS in Scotland and, as such, is the main departmental funder of NHS-related research.CSO currently funds research projects lasting up to three years up to a maximum of £150,000.CSO would be pleased to consider funding research proposals into the long term effects of different methods of treating attention deficit hyperactivity disorder subject to these limits.