Hey, hey, ho, ho, Immanuel Kant is the way to go!

Marisa, in sum, the "long and short" of the ethical challenge at the heart of these two case studies are "full disclosure" of facts and individual choice, given these fully disclosed facts, to opt in or out of the research.  You are restating in essence Immanuel Kant.  He argues that each human has reason, with which to analyze and weigh facts and to make decisions for himself or herself.  To bypass this unique human quality is to dehumanize us, them.  What makes us human, as Kant observes, is our unique capacity to reason, which birds, rocks, animals, fish, plants, etc. do not possess.  To degrade, dismiss this unique capacity is unethical, Kant argues.  Your humble servant says, "Hey, hey, Immanuel Kant all the way!"  Dr. Rux