Little ones can easily be mesmerized by digital screens. A cartoon character on TV asking questions and pausing for a response can bring them to a complete halt. But science shows that children under the age of 30 months rarely learn from such encounters. A study of 176 toddlers aged 24 and 30 months gauged four different conditions under which children would best learn the name of a new object: directly from a person with the child, a responsive video chat, an unresponsive video, or an unresponsive live person. None of the toddlers learned under the video conditions, which Vanderbilt University researcher Georgene Troseth says is “because to toddlers, a flat image of a person on a screen isn't ‘real’, so their brains tell them what they are seeing isn't personally relevant and not something they can learn from.” This study is further proof that toddlers need face-to-face interactions with living breathing humans in order to learn new information.