There has been increased attention in recent years to the importance o
f individual privacy and professional confidentiality both in Australi
a and overseas. At the same time, psychologists' growing research inte
rests in areas such as AIDS, child sexual abuse, and domestic violence
have led to new ethical dilemmas over the contract of confidentiality
between researchers and their research participants. The present pape
r discusses a number of issues regarding the ethics of confidentiality
in psychological research. Following Bok (1989), the issues are highl
ighted within the context of four ethical principles that underlie res
earchers' obligations to preserve confidentiality. These principles ar
e derived from considerations of privacy, loyalty, the pledge of silen
ce, and professional codes of ethical standards. Each of these princip
les is illustrated with examples taken from recent research. We devote
special attention to instances that appear to provide a clash between
moral principles.