Jan Visser, Engineering Degree (1965), Delft University of Technology; PhD (1989), Florida State University. Jan is Theoretical Physicist and multiply awarded Cognitive Scientist. He is founding President & Senior Researcher at the Learning Development Institute and a former UNESCO Director. Jan publishes prolifically across disciplines in multiple languages.Muriel Visser, PhD (2004), Florida State University, International Development Specialist. Muriel is an independent consultant, specialized in humanitarian and development aid evaluations. She works for international agencies around the world and is an associate researcher with the Learning Development Institute.