Research Professor & Senior Scientist, CREDE, Graduate School of Education, University of California, Berkeley 2005 -present

Emeritus Professor of Education and Psychology, University of California, Santa Cruz

Visiting Professor of Education, University of Hawaii at Manoa, Summer 2003 - present,

Emeritus Professor of Education, University of Hawaii

Visiting Professor of Education, 2001, Stanford University

Professor of Psychology, University of Hawaii at Manoa, 1968 - 1989.

Associate Professor of Psychology, University of Arizona, 1961-68