Which psychologist can be described as working from the role-playing model of hypnosis?

a. Dr. Amin says, "Hypnosis is a social interaction between a hypnotist and a subject.".
b. Dr. Birnbaum says, "Hypnosis is an altered state of awareness characterized by heightened suggestibility.".
c. Dr. Chestnut says, "Hypnosis involves a state of dissociated consciousness.".
d. Dr. Davison says, "In hypnosis, part of the subject's consciousness remains a hidden observer.".
e. Dr. Evans says, "Hypnosis is a trance state.".

a