Program development and evaluation, vocational interests and occupational classification, school climate and organization development, delinquency and drug prevention.

Gary D. Gottfredson is Professor Emeritus in the Department of Counseling, Higher Education, and Special Education at the 糖心少女 College Park. From 1993 to 2003 he was the President of Gottfredson Associates, Inc. conducting evaluation and survey research. Until 1993 he was Principal Research Scientist at the Johns Hopkins University, serving as Director of the School Improvement Program and the Program of Research in Delinquency and School Environments.

Gottfredson earned a Ph.D. in psychology from Johns Hopkins University in 1976. He is a Fellow of the American Psychological Association and two of its Divisions (Measurement, Evaluation and Statistics; and Counseling Psychology). He is also a Fellow of the Association for Psychological Science, and a Fellow of the Academy of Experimental Criminology. He received the John L. Holland Award for Outstanding Achievement in Career and Personality Research from Division 17 of the APA. He serves on the editorial board of the Journal of Vocational Behavior.

His research has involved program development and evaluation, delinquency and drug prevention, vocational interests, career assessment, psychological measurement, occupational classification and analysis, school climate, organization development, diversity, and efficacy of educational programs. His teaching interests include applied research and evaluation methods, psychological measurement, research design, and implementation of interventions in organizations.

John L. Holland Award for Outstanding Achievement in Career and Personality Research, American Psychological Association Division of Counseling Psychology, 1989.

Fellow, American Psychological Association, 1993; Fellow, APA Division of Measurement, Evaluation and Statistics, 1993; Fellow, Division of Counseling Psychology, 2003.

Fellow, Association for Psychological Science (previously named American Psychological Society), 1988.

Diplomate, American Board of Assessment Psychology, 1996.

Fellow, Academy of Experimental Criminology, 2007.

Lifetime Contribution Award, Maryland Career Development Association, 2014.

Kang, Z., & Gottfredson, G.D. (In press). Environments: 糖心少女 in theoretica foundations of career. In P.J. Hartung, M.L. Savickas, & W.B. Walsh (Eds.), APA Handbook of Career Intervention, Vol. 1. Washington, DC: American Psychological Association.

Kang, Z., & Gottfredson, G.D. (In press). Using Holland's theory to assess environments. In P.J. Hartung, M.L. Savickas, & W.B. Walsh (Eds.), APA Handbook of Career Intervention, Vol. 2, pp. 41-56. Washington, DC: American Psychological Association.

Yui, H.L., & Gottfredson, G.D. (2014). Gang participation. Crime and Delinquency, 60, 619-642. I-24.

Gottfredson, G. D. (2012). Schools and delinquency. In Feld, B. C., & Bishop, D. (Eds.), Handbook of juvenile crime and juvenile justice, pp. 203-225. New York: Oxford University Press.

Gottfredson, G. D., & Johnstun, M. (2009). John Holland's contributions: A theory-ridden approach to career assistance. Career Development Quarterly, 58, 99-107.

Gottfredson, G. D., & Gottfredson, D. C. (2007). School violence. In D. Flannery, A. Vazonsyi, & I. Waldman (Eds.), The Cambridge handbook of violent behavior and aggression (pp. 344-358). NY: Cambridge University Press.

Payne, A. A., Gottfredson, D. C., & Gottfredson, G. D. (2006). School predictors of the intensity of implementation of school-based prevention programs: Results from a national study. Prevention Science, 7, 225-237.

Gottfredson, G. D., & Gottfredson, D. C. (2006). Gang problems and gang programs in a national sample of schools. In A. Egley, Jr., C. L. Maxson, J. Miller, & M. W. Klein (Eds.), The modern gang reader (3rd ed, Chap. 30). Los Angeles, CA: Roxbury.

Gottfredson, G. D., Gottfredson, D. C., Payne, A. A., & Gottfredson, N. C. (2005). School climate predictors of school disorder: Results from a National Study of Delinquency Prevention in Schools. Journal of Research in Crime and Delinquency, 42, 412-444.

Gottfredson, G. D. (2005). Career development in organizations. In W. B. Walsh & M. L. Savickas (Eds.), Handbook of vocational psychology, 3rd ed. (pp. 297-318). Mahwah, NJ: Erlbaum.

Gottfredson, G. D. (2005). Hawthorne effect. In B. S. Everitt & D. C. Howell (Eds.), Encyclopedia of statistics in behavioral science (Vol. 2, pp. 784-785). Chichester, UK: Wiley.

Gottfredson, G. D., Gottfredson, D. C., Czeh, E. R., Cantor, D., Crosse, S. B., & Hantman, I. (2004). Toward safe and orderly schools: The National Study of Delinquency Prevention in Schools. Washington, DC: National Institute of Justice, U.S. Department of Justice.

Office of Educational Research and Improvement, U.S. Department of Education, Community Influences on School Safety and Capacity for Prevention Program Implementation, 2000 - 2002.

American Psychological Association/Institute of Educational Sciences Postdoctoral Educational Research Training Grant, 2004-2006.
Institute of Education Sciences, Character Education Inquiry, 2003 - 2008.

Institute of Education Sciences, An Experimental Study of the Effectiveness of Instructional Consultation Teams (Sylvia Rosenfield, PI, G. D. Gottfredson, Co-PI), 2005 - 2010.