CriticalThinking.NET is a non-commercial website that has been developed by Professor Robert H. Ennis, Emeritus Professor from the University of Illinois and his son (and regular commenter on his draft research), Professor S. F. Ennis. The purpose is to provide a rigorous source of information on critical thinking. Professor Robert Ennis has written more than 50 scholarly articles on critical thinking, including the seminal 1962 article “A Concept of Critical Thinking” in the Harvard Educational Review.