human subject human subject

A person who participates in a research study.
Example of human subject in a sentence
The term human subject is sometimes used in legal research documents instead of “study participant.”
More Info
A human subject is a person in a research study.
The term “human subject” was first used in research regulations in the 1970s. Since then, there has been a growing appreciation that “human subjects” should be called “participants” because they are active partners in the research. Participants share in the experience of advancing science and medicine.
Although the term “human subject” is still used in some legal or regulatory documents, the term “study participant” is more respectful.
Other info to think about when joining a study
If you are planning to join a research study, you may see the term “human subject” used in some of the formal documents you are given to review and sign. This is often because there is still some legal language that uses the term instead of “participant.”
Your contribution to science is very important. Please know that regardless of what term is used to describe study participation, the scientific community is grateful if you choose to join a study.
If you have any questions about participating in a study, you should feel free to ask the study team and talk with someone you trust about whether to enroll.