That moral maxim or principle, attributed to Kant, which holds that persons should be treated as ends in themselves, and never as means only.
The logical error of question-begging; to assume as true or given that which is also to be argued for; to have the conclusion simply re-state the premise.
Payment or medical care provided to subjects injured in research; does not refer to payment (remuneration) for participation in research.
Capability of a mature person to reason and to choose autonomously.
Technically, a legal term, used to denote capacity to act on one's own behalf; the ability to understand information presented, to appreciate the consequences of acting (or not acting) on that information, and to make a choice.