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How Seasonal Am I?

A large study of patients undergoing light therapy, published in the prestigious Archives of General Psychiatry, found major clinical improvement in about 80% of cases when the light was scheduled at an optimum early hour. If the light was scheduled later, the response rate dropped to about 40%.

To find out what your optimum earlier hour would be for light therapy, take the Automated Morningness-Eveningness Questionnaire on the Self Assessment section of this website.