One day, Judith Danovitch overheard her son interrogating Siri on the family’s iPad.
“What color shirt am I wearing?” the then four-year-old asked.
Danovitch, a researcher at the University of Louisville, says he was testing the boundaries of Siri’s knowledge—something that, her research finds, often happens when kids get to be about that age. And the more studies she and others in the field conduct, the more robust the behavior appears.