human research subject; person being studied
Formal term used in academic, medical, or social research contexts to refer to an individual who is the subject of a study.
In this research, it is necessary to obtain prior consent from the human research subjects.
The privacy of the research subjects is strictly protected.
被験者 is a more common term for a test subject or participant in an experiment, while 研究対象者 is broader and can include observational studies.
Compound of 研究 (research), 対象 (subject/target), and 者 (person).