Google will now invite U.S. users to "check if you're clinically depressed" by using a clinically-validated screening questionnaire. "The move announced on Wednesday comes out of work with the National Alliance on Mental Illness (NAMI) and represents the first time that the search giant has promoted a mental health self-assessment tool in search results," reports Financial Times. From the report: The intervention by the world's most popular search engine comes as people increasingly seek medical advice online: Google says one in 20 searches are health-related, although it will not disclose what proportion are about depression. It is also the latest public move by a technology business to take greater responsibility for content that users see on its platform, after criticism that companies such as Facebook and Google failed to help people distinguish verified from false information. A box of verified information about symptoms and treatments for clinical depression already tops U.S. Google search results for "depression" or queries such as "do I have depression." Google does this for other common conditions, including flu and tonsillitis, and symptoms such as headaches, using information provided by the Mayo Clinic, a non-profit medical organization. But for depression it has added a link inviting users to "check if you're clinically depressed." This takes searchers to a questionnaire widely used by doctors to measure levels of depressive symptoms. People who complete the test get a score indicating the severity of their symptoms, which can aid a physician's diagnosis.