Hans Super of Braingaze in Spain will develop a low-cost application for smart phones that can measure eye vergence, which is when the two eyes align on one object, as a potential proxy for cognitive development in infants. They will generate software that presents visual images, and incorporate an eye tracking system that records eye position binocularly. The application will be tested on 10 infants between 6 and 24 months old, followed by cognitive performance tests to associate changes in eye vergence with brain development.