Committee for Skeptical Inquiry (CSI) -- formerly known as CSICOP (publishers of Skeptical Inquirer magazine) (Scientific Consultant 1992 to present; Member of UFO Subcommittee)
American Council on Science and Health (Scientific Advisor 1997 to present)
Faith-healing Investigation Project, Committee for the Scientific Examination of Religion (CSER) (sponsored by the Council for Secular Humanism and Free Inquiry magazine) (Member 1986-90)
Mensa (Member since 1982; Founder and National Coordinator of a "Skeptic" Service 1987-2011) (Read my Mensa essays)
Tampa Bay Skeptics (Founder and Executive Director; Editor of
Tampa Bay Skeptics Report
1988 to present)
Committee for Skeptical
Inquiry
American Council on Science
and Health
Mensa