Someday, a smart phone app that asks what you’re feeling 10 times a day may be able to tell you if you’re edging closer to depression—and recommend that you seek preventive therapy or drugs. Scientists have discovered that how quickly someone bounces back from negative feelings, over hours or days, can predict whether that person is at risk of an episode of major depressive disorder.
“The holy grail of depression epidemiology is that we want to intervene early to prevent people from having depressive episodes,” says social scientist Stephen Gilman of Harvard University, who was not involved in the study. “Where this work is headed is making an advance in that direction, toward early detection and therefore early intervention.”
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