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A year ago, a researcher tested Samsung's S Voice digital assistant by telling it he was depressed. "Maybe it's time for you to take a break and get a change of scenery." Researchers found Apple's Siri and Microsoft's Cortana couldn't understand queries involving abuse or sexual assault, according to a study published in March in JAMA Internal Medicine. Next week's Consumer Electronics Show will show off digital assistants' abilities to make our lives a little easier by adding more voice-powered smarts into our lights, appliances and door locks. While these smart-home ideas are likely to gain plenty of attention at CES, the JAMA study highlights the need to improve digital helpers' responses to more critical health and wellness issues, as well.