Bos, A. (2001). Adult Education in the Community Colleges. In D. H. Poonwassie & A. Poonwassie (Eds.), Fundamentals of adult education: issues and practices for lifelong learning (1st ed., pp. 171-188). Thompson Educational Publishing.
“… if a psychological principle is to be useful for educational decision-making, it should take account of both differential effectiveness of educational approaches upon various learners, and the differential results from using various measures of indexing educational accomplishment.” (p 68)