Other than being a good conversationalist and being able to make small talk with a patient, what did “one on one” consist of. You’re not suggesting a third med student rotating in psych had enough command of psych issues to be actively involved patient treatment/care?
In S’s case this “special training”, in part, focused on defensive techniques in case they were attacked, or warnings not to let certain patients get you cornered as patient’s would make claims that you (student) had tried to molest them.