Bachelor in Psychology, University Hawaii, 1981. Master of Arts in Social Psychology, University Michigan, 1985. Doctor of Philosophy, University Michigan, 1988.
Research assistant Research Center for Group Dynamics, Institute for Social Research, Ann Arbor, Michigan, 1983-1985. Research associate Survey Research Center, Institute for Social Research, 1985-1988. Associate research scientist American Institutes for Research, Palo Alto, California, 1988-1991.
Senior research associate Sociometrics Corporation, Los Altos, 1991-1997, principal research scientist, 1997-2000, chief technical officer, 1997-1998, director research products and services, 2000. President Prosocial Science Institute, Monterey, since 1999. Senior scientist Northrop Grumman Corporation, since 2000.
Research health science specialist VA, Palo Alto, California, 1990. Health research consultant MEDEX, Honolulu, 1989-1991.
Member American Psychological Association, American Psychological Society (charter). Served on nonprofit boards of directors since 2000.
Married Judith Sigrid Brademeyer, July 15, 1990. Children: Sage Alexandra, Elijah Tyler.