A Research Study Offers Elderly Men, Who Have in the Past

A research study offers elderly men, who have in the past been prison inmates, $1,500 for participation in an all-day workshop at which they agree to be hypnotized and tell stories of incarceration, which later are published. The research participants are allowed to listen to the tapes of what the men said under hypnosis and to withdraw permission to use any part of the information. Why is this scenario a violation of self-determination?

A) Allowing participants to withdraw permission to use part of the research information violates the study integrity and represents deception.
B) It is an example of coercion.
C) Prisoners are a vulnerable population and should not be used as research participants.
D) What is said under hypnosis may not be true.