Informed Consent: What Must Be Disclosed and What Must Be Understood?

Area of Science:

• Bioethics
• Clinical Research Ethics
• Informed Consent Law

Background:

• Numerous studies reveal inadequate participant comprehension of critical clinical trial information, including risks and treatment novelty.
• The standard ethical framework posits that valid informed consent necessitates participant understanding of disclosed information.

Purpose of the Study:

• To challenge the standard view linking disclosure and understanding requirements in informed consent.
• To propose distinct ethical grounds for disclosure and understanding in clinical research.

Main Methods:

• Conceptual analysis of informed consent requirements.
• Examination of the distinct conditions under which consent can be invalidated.

Main Results:

• The standard view incorrectly conflates disclosure and understanding requirements for informed consent.
• Disclosure and understanding have separate ethical justifications, tied to distinct invalidation pathways for consent.

Conclusions:

• It is ethically permissible to enroll willing participants in clinical trials even if they have not fully understood all disclosed information.
• Revising the conceptual linkage between disclosure and understanding can refine ethical standards for clinical trial enrollment.