Demonstrates that approach gradients can be steeper than avoidance gradients. An individual with an avoidance-approach conflict, placed on the goal side of the intersection of the gradients, would enthusiastically approach a goal previously avoided. Implications of avoidance-approach conflict are discussed. (Author/BEF)

Olae is a computer system for assessing student knowledge of physics, and Newtonian mechanics in particular, using performance data collected while students solve complex problems. Although originally designed as a stand-alone system, it has also been used as part of the Andes intelligent tutoring system. Like many other performance assessment…