During the 1970s there was a rapid increase in interest in metacognition and metalinguistics. The impetus came from linguistics, psychology, and psycho- linguistics. But with rather unusual rapidity the work from these scientific dis- ciplines was taken over in education. This new direction in these various areas of academic study was taken simultaneously by several different investigators. Although they had varying emphases, their work sometimes appears to be over- lapping; despite this, it has been rather difficult to find a consensus. This is reflected in the varying terminology used by...