Professor Stake received his B.A. in Mathematics with a minor in naval science and Spanish from the University of Nebraska in 1950. He graduated with an M.A. in educational psychology in 1954 from this university. In 1958, he received his Ph.D. in psychology from Princeton University. From 1955 to 1958, he was a Psychometric Fellow at the Educational Testing Service. Then, an Associate Professor and Faculty Research Coordinator of the College of Education at the University of Nebraska at Lincoln. In 1963, he arrived at the University of Illinois at Urbana-Champaign where he assisted Thomas Has...