71. In their relations with participants or their legal representatives, psychologists must ensure(1) that all participants or, where applicable, their legal representatives have been properly informed on the nature of the research, its goal, objectives, the benefits they would derive from conventional professional services, if needed, and the major, special or unusual risks inherent in the research and any other consideration likely to assist the participants in making a decision regarding their participation;
(2) that free and enlightened consent is obtained in writing from the participants or, where applicable, their legal representatives before they begin to take part in the research or whenever any significant change is made to the research in progress; and
(3) that participants or, where applicable, their legal representatives are informed that their consent may be revoked at all times verbally.