“Boosters say toys with even the most basic brain wave-reading technology — scheduled to debut later this year — could boost mental focus and help kids with attention deficit hyperactivity disorder, autism and mood disorders. But scientific research is scant. Even if the devices work as promised, some question whether people who use biofeedback devices will be able to replicate their relaxed or focused states in real life, when they’re not attached to equipment in front of their television or computer.”