Video Description: The fascinating interplay of genetic predispositions and experience in the development of the brain after birth is demonstrated in this film produced at the Brain Development Laboratory at the University of Oregon. Three profiles of plasticity are depicted with compelling film sequences of behavioral, MRI and EEG research into the development of visual perception and language acquisition from infancy through old age. A congenitally deaf young woman, hearing university students and lively preschool children participate in controlled studies that illustrate both how neuroscience research is conducted and also how all brains change over time and circumstance. Practical advice for the utilization of sensitive periods and optimal specialization of brain areas make the learning of these concepts meaningful to students.