This paper explores the effects of item choice on ability estimation when using a tailored testing procedure based on the Rasch simple logistic model. Most studies of the simple logistic model imply that ability estimates are totally independent of the items used, regardless of the testing procedure. This paper shows that the ability estimate is…

Limitations seen in traditional educational procedures are discussed, and three new directions are suggested as being important emphases for testing. A new perception of measurement in which children have positions along particular concept dimensions or "lines" is discussed in terms of traditional testing notions including variables, item banks…