This document discusses various types of consent required for research involving human subjects. It describes informed consent as voluntary agreement from capable adult subjects, parental permission for minors under 18, and assent for those too young for informed consent but old enough to understand the research purpose. Proxy consent involves a legally authorized representative consenting on behalf of incapable subjects. The document outlines essential elements to include in informed consent forms, such as research purpose and risks/benefits. It emphasizes consent as an ongoing process of providing sufficient information and time for voluntary decision making, to respect subject autonomy.