John Sweller is an Emeritus Professor who is best known for formulating cognitive load theory which uses our knowledge of evolutionary psychology and human cognitive architecture as a base for instructional design. The theory is one of the most highly cited educational psychology theories. John Sweller received a Ph.D. from the University of Adelaide’s Department of Psychology in 1972 and a B.A. (Hons.) from the same institution in 1969. He has authored over 180 academic publications and is a Fellow of the Academy of Social Sciences in Australia.