I really liked the article penned by Connie Malamed. It is very strait forward in bullet format, easy to read and does an excellent job of outlining the characteristics of adult learners. She lists 14 generalized characteristics, with a few supporting points for each one. In addition there is a comment section were readers can express their thoughts and some added additional points. As an instructor, I would get my students to read the 14 points and check off the ones that they are challenged by. That way I know which areas to focus on to better plan the delivery of the subject matter.