Abstract
I. Problem and Method.Recent work on the psychology of intelligence and thinking suggests that perceptual types of intelligence tests are inadequate for dealing with psychiatric cases, young children, old people, mental defectives, and primitive peoples. The argument is that, in these groups, intellectual processes have either deteriorated from or failed to develop to that level with which most perceptual intelligence tests are concerned. The methods of scoring also assume that the correct answers are always reached in the same way, but this is by no means always the case, as Goldstein and Scheerer (1941, p. 14) have pointed out. The studies of Werner (1948), Piaget (1951), Goldstein (1940), Hanfmann and Kasanin (1942), Rapaport (1951), Moursy (1952)et al.show convincing evidence that cognition can take place at different “levels.” The exact determination of the number, nature, and scope of the different levels remains a task for the future, since the present situation is confused, to say the least.

This publication has 11 references indexed in Scilit: