Just FYI: PCMA's Web site has a fantastic collection of articles on adult learning that really should be a must-bookmark for all involved in meetings/events/hospitality.
Of course, we have a few of our own:
...to name a few.
Other good resources from our Industry Links page:
Whatever aspect of the industry we're in, it behooves us all to learn how adults learn. Even those of us on the journalist end can learn a lot about how to get info out in a way people "hear" best by learning more about learning.