For additional information on the Federal regulations governing human subjects research, visit the Office for Human Research Protections (OHRP) at the US Department of Health and Human Services [http://www.hhs.gov/ohrp/].  Additional information on the history of regulations governing human subjects research, including the Belmont Report and the Declaration of Helsinki can be found at this site as well.

For discipline-specific information concerning human subjects research, please see these sites:

Anthropology: http://www.aaanet.org/stmts/ethstmnt.htm
Psychology: http://www.apa.org/ethics/code2002.html