A large body of research demonstrates the incredible power of initial conceptions, scripts, and stereotypes that result from our naive theories. Prior knowledge compatible with information introduced by instructors enhances encoding and retrieval, but hinders learning when in conflict with it. Theories and facts contradicting existing beliefs are…

Use of hypertext is pervasive in education today--it is used for all online course delivery as well as many stand-alone delivery methods such as educational computer software and compact discs (CDs). This article will review Kintsch's Construction-Integration and Anderson's Adaptive Control of Thought-Rational (ACT-R) cognitive architectures and…

Reports on an experiment that explored novice learners' responses to anomalous data (new data that contradict previous beliefs). Secondary education students were given both anomalous and confirmatory data concerning various theories about the origin of life on earth. Statistical data reveal their level of awareness of the contradictions. (MJP)