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PRINCIPALS
tomc@silvergategroup.com
Mr. Colthurst, since 1971, has held positions in local government and at the University of California, San Diego. He concurrently serves with the Higher Education Center on Alcohol and Other Drug Prevention (associate director).
Barbara E. Ryan, Director of Editorial Services
Ms. Ryan has been editor of several nationally-circulated periodicals:
(published by the Silver Gate Group) She co-authored the College Alcohol Risk Assessment Guide (1994, 1997) and authored or edited numerous other monographs and reports for various clients.
Lance Segars, PhD, Director of Evaluation Services
Dr. Segars, also an adjunct faculty member at the San Diego State University School of Social Work, has installed, managed, and trained others in community surveillance systems, directed treatment follow-up studies, and conducted prevention demonstration evaluations.
Updated: September 3, 2004