Two crossed lines that form an 'X'. It indicates a way to close an interaction, or dismiss a notification.An icon in the shape of a person's head and shoulders. It often indicates a user profile.Psychologists are learning how dangerous smartphones can be for teenage brains.The World Health Organization recently advised parents to for children under five. Though found little correlation between screen-time and mental health impacts, other research has found that an eighth-grader's risk for depression when he or she frequently uses social media. But the writing about smartphone risk...…Two crossed lines that form an 'X'. It indicates a way to close an interaction, or dismiss a notification.An icon in the shape of a person's head and shoulders. It often indicates a user profile.Psychologists are learning how dangerous smartphones can be for teenage brains.The World Health Organization recently advised parents to for children under five. Though found little correlation between screen-time and mental health impacts, other research has found that an eighth-grader's risk for depression when he or she frequently uses social media. But the writing about smartphone risk...WW…