The water jug task model was extended to four variations of the Missionaries--Cannibals river-crossing problem. Different cover stories resulted in large differences in number of illegal moves, but no difference in number of legal moves to solution. The three-stage process model explains both legal and illegal moves. (Author/GDC)

This investigation focuses upon the question of: (1) how naive subjects organize and represent knowledge when solving problems; (2) how previous experience of a novice is used in solving a problem; (3) what kinds of information and knowledge are sought as well as overlooked by novices when solving problems; (4) what kinds of strategies novices…

In an attempt to serve underprepared students--students who are beginners in writing, reading, and logical thinking skills--the English department at Keene State College in New Hampshire has been evolving a developmental English composition course designed to enable these students to participate effectively in their subsequent general education…