There are few basic principles around which the research work would depend:
Harm to participants: harm could imply: physical, harm to self-esteem, harm to career etc. The AOM Code of Ethical Conduct states that it is the responsibility on part of the researcher to have proper assessment of any possibility of harm on the participants.
Lack of informed consent: it means that prospective participants should be provided with as much information as possible to make an informed decision about whether they want to continue to be a part of the study or not.
Invasion of privacy: privacy is basically linked to the principle of informed consent to the extent that informed consent is provided on the basis of a detailed comprehension of what the participant involvement would be like. There is no doubt that the researcher participant would not abrogate the right to privacy just by getting informed consent.
Deception: it happens when researcher represent their work as something other than what it is. Deception in various degrees is much widespread as researchers often wish to restrict participants comprehension of what the research has to speak about so as to respond naturally to the experimental treatment.