Comments on this special issue on cognitive load theory and suggests three new basic directions for research: (1) the potential of cognitive load theory (CLT) to ground approaches to learning and instruction; (2) monitoring activities that occur in the learning process; and (3) the study of the notion of prior knowledge in the context of CLT. (SLD)

The literature on novice-expert shifts in teacher knowledge is examined from the perspective of constructivist learning theory with a view to identifying lessons for teacher educators. Limitations in teacher knowledge are explored, and three requirements are outlined for a research agenda on teacher's learning. (SLD)

It is argued that cognitive psychology has contributed to advances in learning and instruction not so much because of its original epistemology and implicit theory of learning as because of its methodology. A revised epistemology conceptualizing the mind as a developing biological system will bring new advances in understanding learning. (SLD)