From the A.Word.A.Day mailing list:

andragogy (AN-druh-go-jee) noun: The methods or techniques used to teach adults.

(Andr- variant of andro-, male + (ped)agogy.)

"As all the patients undergoing cataract surgery are mature adults, the theory of androgogy is more appropriate."
Jean Cooper, "Teaching patients in post-operative eye care: The demands of day surgery," Nursing Standard, Apr 28, 1999.