What is one major ethical principle in psychological research?

Informed consent is a fundamental ethical principle in psychological research that ensures participants are fully aware of the nature of the study, including potential risks and benefits, before agreeing to take part. This principle serves to protect individuals' autonomy and rights, allowing them to make informed decisions about their participation without coercion or undue pressure. By obtaining informed consent, researchers demonstrate respect for their participants and uphold ethical standards in their work.

The process involves providing clear, comprehensive information about the study's aims, procedures, and any potential impacts on the participants. It also includes the right to withdraw at any time without penalty. This practice is essential for maintaining trust and integrity in the research process, ensuring that participants are engaged in a manner that prioritizes their well-being.

While the other options may touch on important aspects of research ethics, they do not capture the core principle of informed consent, which is vital for ethical participation in research studies.