Ethical principles developed by psychologists urge investigators to

A) avoid the use of animals in experimental research.
B) minimize the use of the double-blind procedure with human research participants.
C) treat information about individual research participants confidentially.
D) avoid the use of financial incentives in any kind of research.

Ethical principles developed by psychologists urge investigators to treat information about individual research participants confidentially. This is essential to protect the privacy and well-being of the participants, and to maintain their trust in the research process. A, B, and D are not accurate principles as animal use is sometimes necessary for certain types of research, double-blind procedures are often necessary to ensure unbiased results, and financial incentives can sometimes be used ethically in research.