In the early 1960s, Dr. Jan van Dijk of the Netherlands was asked to assess children with sensory impairments and multiple disabilities. He found that existing assessment tools were not useful because they assumed that the children had been exposed to typical experiences; and he felt that children with sensory impairments and multiple disabilities, due to the very nature of their impairments, had not had the opportunity to experience the world in a typical manner. Dr. van Dijk has dedicated his 50-year career to helping children who have multiple disabilities in addition to deafblindness. His child-guided strategies are recognized and used throughout the world.