The study was designed to investigate the learning processes in discrimination shift learning, in terms of developmental views of "logical manipulation by classification." Tasks comparing sizes of intradimensional value-classes and comparing sizes of interdimensional value-classes were devised in order to measure subjects' levels of…

Reexamines the traditional role of observation in science and science education. Proposes that since observation is based on some view of the world, it is not innocent and unbiased, but theory-dependent. Discusses possible implications for the science curriculum when reconsidering the role and status of observation in science. (TW)