Objective Measures of Activity and Attention in the Differential Diagnosis of Childhood Psychiatric Disorders Gianni L. Faedda, M.D, a Martin H. Teicher, Ph.D., M.D. b a ‘Lucio Bini’ Mood Disorders Center of New York, 245 East 50 th Street, Suite 2A, New York, NY 10022 b Department of Psychiatry and Developmental Biopsychiatry Program, Harvard Medical School, McLean Hospital, 115 Mill Street, Belmont MA 02478 Running Title : Actigraphy/MMAT TM in Child Psychiatry Correspondence to : Dr. G.L. Faedda, 245 East 50thStreet, New York, NY 10022; Tel (212) 644-3111; Fax (212) 644-3119; Essential psychopharmacology. 02/2005; 6(5):239-49. [3156 word text, 169 word abstract, 17 references, 4 figures]