THE STUDIES of bright light therapy in the treatment of seasonal affective disorder (SAD; also known as winter depression) in this issue of the ARCHIVES1- 3 are sound studies that address important fundamental questions. Is bright light therapy more than a placebo effect? Is morning bright light therapy more effective than evening bright light?
Avery DH. A Turning Point for Seasonal Affective Disorder and Light Therapy Research?. Arch Gen Psychiatry. 1998;55(10):863–864. doi:10.1001/archpsyc.55.10.863